diff --git "a/wikipedia_38.txt" "b/wikipedia_38.txt" new file mode 100644--- /dev/null +++ "b/wikipedia_38.txt" @@ -0,0 +1,10000 @@ + +Practice + +Subdisciplines + +Chemistry is typically divided into several major sub-disciplines. There are also several main cross-disciplinary and more specialized fields of chemistry. + Analytical chemistry is the analysis of material samples to gain an understanding of their chemical composition and structure. Analytical chemistry incorporates standardized experimental methods in chemistry. These methods may be used in all subdisciplines of chemistry, excluding purely theoretical chemistry. + Biochemistry is the study of the chemicals, chemical reactions and interactions that take place in living organisms. Biochemistry and organic chemistry are closely related, as in medicinal chemistry or neurochemistry. Biochemistry is also associated with molecular biology and genetics. + Inorganic chemistry is the study of the properties and reactions of inorganic compounds. The distinction between organic and inorganic disciplines is not absolute and there is much overlap, most importantly in the sub-discipline of organometallic chemistry. + Materials chemistry is the preparation, characterization, and understanding of substances with a useful function. The field is a new breadth of study in graduate programs, and it integrates elements from all classical areas of chemistry with a focus on fundamental issues that are unique to materials. Primary systems of study include the chemistry of condensed phases (solids, liquids, polymers) and interfaces between different phases. + Neurochemistry is the study of neurochemicals; including transmitters, peptides, proteins, lipids, sugars, and nucleic acids; their interactions, and the roles they play in forming, maintaining, and modifying the nervous system. + Nuclear chemistry is the study of how subatomic particles come together and make nuclei. Modern transmutation is a large component of nuclear chemistry, and the table of nuclides is an important result and tool for this field. + Organic chemistry is the study of the structure, properties, composition, mechanisms, and reactions of organic compounds. An organic compound is defined as any compound based on a carbon skeleton. + Physical chemistry is the study of the physical and fundamental basis of chemical systems and processes. In particular, the energetics and dynamics of such systems and processes are of interest to physical chemists. Important areas of study include chemical thermodynamics, chemical kinetics, electrochemistry, statistical mechanics, spectroscopy, and more recently, astrochemistry. Physical chemistry has large overlap with molecular physics. Physical chemistry involves the use of infinitesimal calculus in deriving equations. It is usually associated with quantum chemistry and theoretical chemistry. Physical chemistry is a distinct discipline from chemical physics, but again, there is very strong overlap. + Theoretical chemistry is the study of chemistry via fundamental theoretical reasoning (usually within mathematics or physics). In particular the application of quantum mechanics to chemistry is called quantum chemistry. Since the end of the Second World War, the development of computers has allowed a systematic development of computational chemistry, which is the art of developing and applying computer programs for solving chemical problems. Theoretical chemistry has large overlap with (theoretical and experimental) condensed matter physics and molecular physics. + +Others subdivisions include electrochemistry, femtochemistry, flavor chemistry, flow chemistry, immunohistochemistry, hydrogenation chemistry, mathematical chemistry, molecular mechanics, natural product chemistry, organometallic chemistry, petrochemistry, photochemistry, physical organic chemistry, polymer chemistry, radiochemistry, sonochemistry, supramolecular chemistry, synthetic chemistry, and many others. + +Interdisciplinary +Interdisciplinary fields include agrochemistry, astrochemistry (and cosmochemistry), atmospheric chemistry, chemical engineering, chemical biology, chemo-informatics, environmental chemistry, geochemistry, green chemistry, immunochemistry, marine chemistry, materials science, mechanochemistry, medicinal chemistry, molecular biology, nanotechnology, oenology, pharmacology, phytochemistry, solid-state chemistry, surface science, thermochemistry, and many others. + +Industry + +The chemical industry represents an important economic activity worldwide. The global top 50 chemical producers in 2013 had sales of US$980.5 billion with a profit margin of 10.3%. + +Professional societies + + American Chemical Society + American Society for Neurochemistry + Chemical Institute of Canada + Chemical Society of Peru + International Union of Pure and Applied Chemistry + Royal Australian Chemical Institute + Royal Netherlands Chemical Society + Royal Society of Chemistry + Society of Chemical Industry + World Association of Theoretical and Computational Chemists + List of chemistry societies + +See also + + Comparison of software for molecular mechanics modeling + Glossary of chemistry terms + International Year of Chemistry + List of chemists + List of compounds + List of important publications in chemistry + List of unsolved problems in chemistry + Outline of chemistry + Periodic systems of small molecules + Philosophy of chemistry + Science tourism + +References + +Bibliography + +Further reading +Popular reading + Atkins, P.W. Galileo's Finger (Oxford University Press) + Atkins, P.W. Atkins' Molecules (Cambridge University Press) + Kean, Sam. The Disappearing Spoon – and Other True Tales from the Periodic Table (Black Swan) London, 2010 + Levi, Primo The Periodic Table (Penguin Books) [1975] translated from the Italian by Raymond Rosenthal (1984) + Stwertka, A. A Guide to the Elements (Oxford University Press) + + + +Introductory undergraduate textbooks + Atkins, P.W., Overton, T., Rourke, J., Weller, M. and Armstrong, F. Shriver and Atkins Inorganic Chemistry (4th ed.) 2006 (Oxford University Press) + Chang, Raymond. Chemistry 6th ed. Boston: James M. Smith, 1998. . + + Voet and Voet. Biochemistry (Wiley) + +Advanced undergraduate-level or graduate textbooks + + Atkins, P. W. Physical Chemistry (Oxford University Press) + Atkins, P. W. et al. Molecular Quantum Mechanics (Oxford University Press) + McWeeny, R. Coulson's Valence (Oxford Science Publications) + Pauling, L. The Nature of the chemical bond (Cornell University Press) + Pauling, L., and Wilson, E.B. Introduction to Quantum Mechanics with Applications to Chemistry (Dover Publications) + Smart and Moore. Solid State Chemistry: An Introduction (Chapman and Hall) + Stephenson, G. Mathematical Methods for Science Students (Longman) + +External links + + General Chemistry principles, patterns and applications. +In cell biology, the cytoplasm describes all material within a eukaryotic cell, enclosed by the cell membrane, except for the cell nucleus. The material inside the nucleus and contained within the nuclear membrane is termed the nucleoplasm. The main components of the cytoplasm are the cytosol (a gel-like substance), the organelles (the cell's internal sub-structures), and various cytoplasmic inclusions. The cytoplasm is about 80% water and is usually colorless. + +The submicroscopic ground cell substance, or cytoplasmic matrix, that remains after the exclusion of the cell organelles and particles is groundplasm. It is the hyaloplasm of light microscopy, a highly complex, polyphasic system in which all resolvable cytoplasmic elements are suspended, including the larger organelles such as the ribosomes, mitochondria, plant plastids, lipid droplets, and vacuoles. + +Many cellular activities take place within the cytoplasm, such as many metabolic pathways, including glycolysis, photosynthesis, and processes such as cell division. The concentrated inner area is called the endoplasm and the outer layer is called the cell cortex, or ectoplasm. + +Movement of calcium ions in and out of the cytoplasm is a signaling activity for metabolic processes. + +In plants, movement of the cytoplasm around vacuoles is known as cytoplasmic streaming. + +History +The term was introduced by Rudolf von Kölliker in 1863, originally as a synonym for protoplasm, but later it has come to mean the cell substance and organelles outside the nucleus. + +There has been certain disagreement on the definition of cytoplasm, as some authors prefer to exclude from it some organelles, especially the vacuoles and sometimes the plastids. + +Physical nature +It remains uncertain how the various components of the cytoplasm interact to allow movement of organelles while maintaining the cell's structure. The flow of cytoplasmic components plays an important role in many cellular functions which are dependent on the permeability of the cytoplasm. An example of such function is cell signalling, a process which is dependent on the manner in which signaling molecules are allowed to diffuse across the cell. While small signaling molecules like calcium ions are able to diffuse with ease, larger molecules and subcellular structures often require aid in moving through the cytoplasm. The irregular dynamics of such particles have given rise to various theories on the nature of the cytoplasm. + +As a sol-gel + +There has long been evidence that the cytoplasm behaves like a sol-gel. It is thought that the component molecules and structures of the cytoplasm behave at times like a disordered colloidal solution (sol) and at other times like an integrated network, forming a solid mass (gel). This theory thus proposes that the cytoplasm exists in distinct fluid and solid phases depending on the level of interaction between cytoplasmic components, which may explain the differential dynamics of different particles observed moving through the cytoplasm. A papers suggested that at length scale smaller than 100 nm, the cytoplasm acts like a liquid, while in a larger length scale, it acts like a gel. + +As a glass + +It has been proposed that the cytoplasm behaves like a glass-forming liquid approaching the glass transition. In this theory, the greater the concentration of cytoplasmic components, the less the cytoplasm behaves like a liquid and the more it behaves as a solid glass, freezing more significant cytoplasmic components in place (it is thought that the cell's metabolic activity can fluidize the cytoplasm to allow the movement of such more significant cytoplasmic components). A cell's ability to vitrify in the absence of metabolic activity, as in dormant periods, may be beneficial as a defense strategy. A solid glass cytoplasm would freeze subcellular structures in place, preventing damage, while allowing the transmission of tiny proteins and metabolites, helping to kickstart growth upon the cell's revival from dormancy. + +Other perspectives + +Research has examined the motion of cytoplasmic particles independent of the nature of the cytoplasm. In such an alternative approach, the aggregate random forces within the cell caused by motor proteins explain the non-Brownian motion of cytoplasmic constituents. + +Constituents +The three major elements of the cytoplasm are the cytosol, organelles and inclusions. + +Cytosol + +The cytosol is the portion of the cytoplasm not contained within membrane-bound organelles. Cytosol makes up about 70% of the cell volume and is a complex mixture of cytoskeleton filaments, dissolved molecules, and water. The cytosol's filaments include the protein filaments such as actin filaments and microtubules that make up the cytoskeleton, as well as soluble proteins and small structures such as ribosomes, proteasomes, and the mysterious vault complexes. The inner, granular and more fluid portion of the cytoplasm is referred to as endoplasm. + +Due to this network of fibres and high concentrations of dissolved macromolecules, such as proteins, an effect called macromolecular crowding occurs and the cytosol does not act as an ideal solution. This crowding effect alters how the components of the cytosol interact with each other. + +Organelles + +Organelles (literally "little organs") are usually membrane-bound structures inside the cell that have specific functions. Some major organelles that are suspended in the cytosol are the mitochondria, the endoplasmic reticulum, the Golgi apparatus, vacuoles, lysosomes, and in plant cells, chloroplasts. + +Cytoplasmic inclusions + +The inclusions are small particles of insoluble substances suspended in the cytosol. A huge range of inclusions exist in different cell types, and range from crystals of calcium oxalate or silicon dioxide in plants, to granules of energy-storage materials such as starch, glycogen, or polyhydroxybutyrate. A particularly widespread example are lipid droplets, which are spherical droplets composed of lipids and proteins that are used in both prokaryotes and eukaryotes as a way of storing lipids such as fatty acids and sterols. Lipid droplets make up much of the volume of adipocytes, which are specialized lipid-storage cells, but they are also found in a range of other cell types. + +Controversy and research +The cytoplasm, mitochondria, and most organelles are contributions to the cell from the maternal gamete. Contrary to the older information that disregards any notion of the cytoplasm being active, new research has shown it to be in control of movement and flow of nutrients in and out of the cell by viscoplastic behavior and a measure of the reciprocal rate of bond breakage within the cytoplasmic network. + +The material properties of the cytoplasm remain an ongoing investigation. A method of determining the mechanical behaviour of living cell mammalian cytoplasm with the aid of optical tweezers has been described. + +See also + +References + +External links + + +Cell anatomy +Christ, used by Christians as both a name and a title, unambiguously refers to Jesus. It is also used as a title, in the reciprocal use "Christ Jesus", meaning "the Messiah Jesus" or "Jesus the Anointed", and independently as "the Christ". The Pauline epistles, the earliest texts of the New Testament, often refer to Jesus as "Christ Jesus" or "Christ". + +The concept of the Christ in Christianity originated from the concept of the messiah in Judaism. Christians believe that Jesus is the messiah foretold in the Hebrew Bible and the Christian Old Testament. Although the conceptions of the messiah in each religion are similar, for the most part they are distinct from one another due to the split of early Christianity and Judaism in the 1st century. + +Although the original followers of Jesus believed Jesus to be the Jewish messiah, e.g. in the Confession of Peter, Jesus was usually referred to as "Jesus of Nazareth" or "Jesus, son of Joseph", Jesus came to be called "Jesus Christ" (meaning "Jesus the Khristós", i.e. "Jesus the Messiah" or "Jesus the Anointed") by Christians, who believe that his crucifixion and resurrection fulfill the messianic prophecies of the Old Testament. + +Etymology +Christ comes from the Greek word (), meaning "anointed one". The word is derived from the Greek verb (), meaning "to anoint." In the Greek Septuagint, χριστός was a semantic loan used to translate the Hebrew (, messiah), meaning "[one who is] anointed". + +Usage + +The word Christ (and similar spellings) appears in English and in most European languages. English-speakers now often use "Christ" as if it were a name, one part of the name "Jesus Christ", though it was originally a title ("the Messiah"). Its usage in "Christ Jesus" emphasizes its nature as a title. Compare the usage "the Christ". + +The spelling Christ in English became standardized in the 18th century, when, in the spirit of the Enlightenment, the spelling of certain words changed to fit their Greek or Latin origins. Prior to this, scribes writing in Old and Middle English usually used the spelling Crist—the i being pronounced either as , preserved in the names of churches such as St Katherine Cree, or as a short , preserved in the modern pronunciation of "Christmas". The spelling "Christ" in English is attested from the 14th century. + +In modern and ancient usage, even in secular terminology, "Christ" usually refers to Jesus, based on the centuries-old tradition of such usage. Since the Apostolic Age, the... use of the definite article before the word Christ and its gradual development into a proper name show the Christians identified the bearer with the promised Messias of the Jews. + +Background and New Testament references + +Pre–New-Testament references +In the Old Testament, anointing was a ceremonial reserved to the Kings of Israel (1 Kings 19:16; 24:7), Psalms 17 (18):51), to Cyrus the Great (Isaiah 45:1), to the High Priest of Israel, the patriarchs (Psalms 104(105):15 and to the prophets. + +In the Septuagint text of the deuterocanonical books, the term "Christ" (Χριστός, translit. Christós) is found in 2 Maccabees 1:10 (referring to the anointed High Priest of Israel) and in the Book of Sirach 46:19, in relation to Samuel, prophet and institutor of the kingdom under Saul. + +At the time of Jesus, there was no single form of Second Temple Judaism, and there were significant political, social, and religious differences among the various Jewish groups. However, for centuries the Jews had used the term moshiach ("anointed") to refer to their expected deliverer. + +Opening lines of Mark and Matthew +Mark ("The beginning of the gospel of Jesus Christ, the Son of God") identifies Jesus as both Christ and the Son of God. uses Christ as a name and Matthew explains it again with: "Jesus, who is called Christ". The use of the definite article before the word "Christ" and its gradual development into a proper name show that the Christians identified Jesus with the promised messiah of the Jews who fulfilled all the messianic predictions in a fuller and a higher sense than had been given them by the rabbis. + +Confession of Peter (Matthew, Mark and Luke) +The so-called Confession of Peter, recorded in the Synoptic Gospels as Jesus's foremost apostle Peter saying that Jesus was the Messiah, has become a famous proclamation of faith among Christians since the first century. + +Martha's statement (John) +In Martha told Jesus, "you are the Christ, the Son of God, who is coming into the world", signifying that both titles were generally accepted (yet considered distinct) among the followers of Jesus before the raising of Lazarus. + +Sanhedrin trial of Jesus (Matthew, Mark and Luke) +During the Sanhedrin trial of Jesus, it might appear from the narrative of Matthew that Jesus at first refused a direct reply to the high priest Caiaphas's question: "Are you the Messiah, the Son of God?", where his answer is given merely as Σὺ εἶπας (Su eipas, "You [singular] have said it"). Similarly but differently in Luke, all those present are said to ask Jesus: 'Are you then the Son of God?', to which Jesus reportedly answered: Ὑμεῖς λέγετε ὅτι ἐγώ εἰμι (Hymeis legete hoti ego eimi, "You [plural] say that I am". In the Gospel of Mark, however, when asked by Caiaphas 'Are you the Messiah, the Son of the Blessed One?', Jesus tells the Sanhedrin: Ἐγώ εἰμι (ego eimi, "I am"). There are instances from Jewish literature in which the expression "you have said it" is equivalent to "you are right". The Messianic claim was less significant than the claim to divinity, which caused the high priest's horrified accusation of blasphemy and the subsequent call for the death sentence. Before Pilate, on the other hand, it was merely the assertion of his royal dignity which gave grounds for his condemnation. + +Pauline epistles +The word "Christ" is closely associated with Jesus in the Pauline epistles, which suggests that there was no need for the early Christians to claim that Jesus is Christ because it was considered widely accepted among them. Hence Paul can use the term Khristós with no confusion as to whom it refers, and he can use expressions such as "in Christ" to refer to the followers of Jesus, as in and . Paul proclaimed him as the Last Adam, who restored through obedience what Adam lost through disobedience. The Pauline epistles are a source of some key Christological connections; e.g., relates the love of Christ to the knowledge of Christ, and considers the love of Christ as a necessity for knowing him. + +There are also implicit claims to him being the Christ in the words and actions of Jesus. + +Use of Messias in John +The Hellenization Μεσσίας (Messías) is used twice to mean "Messiah" in the New Testament: by the disciple Andrew at John 1:41, and by the Samaritan woman at the well at John 4:25. In both cases, the Greek text specifies immediately after that this means "the Christ." + +Christology + +Christology, literally "the understanding of Christ," is the study of the nature (person) and work (role in salvation) of Jesus in Christianity. It studies Jesus Christ's humanity and divinity, and the relation between these two aspects; and the role he plays in salvation. + +From the second to the fifth centuries, the relation of the human and divine nature of Christ was a major focus of debates in the early church and at the first seven ecumenical councils. The Council of Chalcedon in 451 issued a formulation of the hypostatic union of the two natures of Christ, one human and one divine, "united with neither confusion nor division". Most of the major branches of Western Christianity and Eastern Orthodoxy subscribe to this formulation, while many branches of Oriental Orthodox Churches reject it, subscribing to miaphysitism. + +According to the Summa Theologica of Thomas Aquinas, in the singular case of Jesus, the word Christ has a twofold meaning, which stands for "both the Godhead anointing and the manhood anointed". It derives from the twofold human-divine nature of Christ (dyophysitism): the Son of man is anointed in consequence of His incarnated flesh, as well as the Son of God is anointing in consequence of the "Godhead which He has with the Father" (ST III, q. 16, a. 5). + +Symbols + +The use of "Χ" as an abbreviation for "Christ" derives from the Greek letter Chi (χ), in the word (). An early Christogram is the Chi Rho symbol, formed by superimposing the first two Greek letters in Christ, chi (Χ) and rho (Ρ), to produce ☧. + +The centuries-old English word Χmas (or, in earlier form, XPmas) is an English form of χ-mas, itself an abbreviation for Christ-mas. The Oxford English Dictionary (OED) and the OED Supplement have cited usages of "X-" or "Xp-" for "Christ-" as early as 1485. The terms "Xpian" and "Xren" have been used for "Christian", "Xst" for "Christ's" "Xρofer" for Christopher and Xmas, Xstmas, and Xtmas for Christmas. The OED further cites usage of "Xtianity" for "Christianity" from 1634. According to Merriam-Webster's Dictionary of English Usage, most of the evidence for these words comes from "educated Englishmen who knew their Greek". + +The December 1957 News and Views published by the Church League of America, a conservative organization founded in 1937, attacked the use of "Xmas" in an article titled "X=The Unknown Quantity". Gerald L. K. Smith picked up the statements later, in December 1966, saying that Xmas was a "blasphemous omission of the name of Christ" and that "'X' is referred to as being symbolical of the unknown quantity." More recently, American evangelist Franklin Graham and former CNN contributor Roland S. Martin publicly raised concerns. Graham stated in an interview that the use of "Xmas" is taking "Christ out of Christmas" and called it a "war against the name of Jesus Christ." Roland Martin relates the use of "Xmas" to his growing concerns of increasing commercialization and secularization of what he says is one of Christianity's highest holy days. + +See also + Chrism + Ichthys + Dyophysitism + Hypostatic union + Kerigma + Knowledge of Christ + Masih + Names and titles of Jesus in the Quran + Perfection of Christ + You are Christ + +Notes + +References + +Further reading + + + + + + + + + + + + + + + +Christian messianism +Christian terminology +Christology +Religious titles +Septuagint words and phrases +Davidic line +Capital and its variations may refer to: + +Common uses + Capital city, a municipality of primary status + List of national capitals + Capital letter, an upper-case letter + +Economics and social sciences + Capital (economics), the durable produced goods used for further production + Capital (Marxism), a central concept in Marxian critique of political economy + Economic capital + Financial capital, an economic resource measured in terms of money + Capital good + Human capital + Natural capital + Public capital + Social capital + +Architecture and buildings + Capital (architecture), the topmost member of a column or pilaster + The Capital (building), a commercial building in Mumbai, India + Capital (fortification), a proportion of a bastion + +Arts, entertainment and media + +Literature + +Books + Capital (novel), by John Lanchester, 2012 + Das Kapital ('Capital: Critique of Political Economy'), a foundational theoretical text by Karl Marx + Capital in the Twenty-First Century by Thomas Piketty, 2013 + Capital: The Eruption of Delhi, a 2014 book by Rana Dasgupta + +Periodicals + Capital (French magazine), a French-language magazine + Capital (German magazine), a German-language magazine + Kapital (magazine), in Norway + Capital (newspaper), in Bulgaria + Kapital (newspaper), in North Macedonia + Capital (Romanian newspaper) + Capital (Ukrainian newspaper) + Capital (Ethiopia), a newspaper + A Capital, a defunct daily newspaper in Lisbon, Portugal + Capital New York, an online news site owned by Politico + The Capital, a daily newspaper based in Annapolis, Maryland, U.S. + +Film and television + Capital (film), a 2012 French drama + Capital (British TV series), a 2015 adaptation of Lanchester's novel + Capital (Iranian TV series), 2011–2020 + Capital TV, a former British rolling-music TV channel + Capital TV (Belarus), a TV channel + CTC (TV station), formerly called Capital Television, Ten Capital and Capital 7 + Capital Television (New Zealand), a former television channel in Wellington, the capital of New Zealand, operated by TVNZ + +Music + Capital (album), by Mick Softley, 1976 + Capital (band), a British band + "Capital (It Fails Us Now)", a song by Gang of Four from the 1982 album Another Day/Another Dollar + +Education + Capital College (disambiguation), the name of several institutions + Capital Community College, in Hartford, Connecticut, U.S. + Capital University, in Bexley, Ohio, U.S. + Capital University, Jharkhand, in India + +Sports + Capital CF, a Brazilian football club + Delhi Capitals, an Indian cricket team + Delhi Capitals (basketball), an Indian basketball team + Edinburgh Capitals, a Scottish ice-hockey team + Edmonton Capitals, a Canadian baseball team + University of Canberra Capitals, an Australian women's basketball team + Vienna Capitals, an Austrian ice-hockey team + Washington Capitals, an American ice hockey team + +Transportation + Capital (sidewheeler), a 19th-century American steamboat + Capital Airlines (disambiguation), several uses + Capital ship, a classification of a naval vessel + +Other uses + Capital (radio network), a group of radio stations operating across the United Kingdom + Capitals (typeface), a serif font composed entirely of capital letters + +See also + + + Capitalism (disambiguation) + Capitalization (disambiguation) + Capital City (disambiguation) + Capital Radio (disambiguation) + Capital region (disambiguation) + Captal, a medieval feudal title in Gascony + Capital (economics) + +External links +Central Europe is a geographical region of Europe between Eastern, Southern, Western and Northern Europe. The concept of "Central Europe" emerged in Germany and Austria in the 19th century as "Mitteleuropa". Central Europe is known for its cultural diversity; however, countries in this region also share certain historical and cultural similarities. + +The region comprises most of the former territories of the Holy Roman Empire and those of the two neighboring kingdoms of Poland and Hungary. At its height, the Ottoman Empire controlled the vast majority of the Kingdom of Hungary, engulfing southern parts of present-day Slovakia. By the 18th century, the Habsburg monarchy extended its dominion to include Hungary and parts of Poland, at which point the monarchy also reigned over the territories of Austria, Slovenia, Slovakia and the Czech Republic, alongside parts of Italy, Switzerland and Germany. + +The countries that make up Central Europe have historically been, and in some cases continue to be, divided into either Eastern or Western Europe. After World War II, Central Europe was divided by the Iron Curtain into two parts, the capitalist Western Bloc and the communist Eastern Bloc, although Switzerland, Yugoslavia, and Austria declared neutrality. The Berlin Wall was one of the most visible symbols of this division. Respectively, countries in Central Europe have historical, cultural and geopolitical ties with these wider regions of Europe. + +Central Europe began a "strategic awakening" in the late 20th and early 21st century, with initiatives such as Central European Defence Cooperation, the Central European Initiative, Centrope, and the Visegrád Four Group. This awakening was triggered by writers and other intellectuals, who recognized the societal paralysis of decaying dictatorships and felt compelled to speak up against Soviet oppression. + +All of the Central European countries are considered to be of "very high human development" by the Human Development Index, with Switzerland and Germany having the highest index values. However, some Central European countries, namely Poland and Hungary, are still considered having "emerging market and developing economies" by the IMF. + +Historical perspective + +Middle Ages and early modern period +Elements of cultural unity for Northwestern, Southwestern and Central Europe were Catholicism and Latin. However Eastern Europe, which remained Eastern Orthodox, was dominated by Byzantine cultural influence; after the East–West Schism in 1054, Eastern Europe developed cultural unity and resistance to Catholic (and later also Protestant) Western Europe within the framework of the Eastern Orthodox Church, Church Slavonic language, and the Cyrillic alphabet. + +According to Hungarian historian Jenő Szűcs, the foundations of Central European history at the end of the first millennium were in close connection with Western European development. Szűcs argued that between the 11th and 15th centuries, not only Christianization and its cultural consequences were implemented, but well-defined social features emerged in Central Europe based on Western characteristics. The keyword of Western social development after the turn of the millennium was the spread of Magdeburg rights in some cities and towns of Western Europe. These began to spread in the middle of the 13th century in Central European countries, bringing about self-governments of towns and counties. + +In 1335, the Kings of Poland, Bohemia and Hungary met in the castle of Visegrád and agreed to cooperate closely in the field of politics and commerce, inspiring the post-Cold War Visegrád Group. + +Before World War I + +The concept of Central Europe was already known at the beginning of the 19th century, but it developed further and became an object of intensive interest towards the 20th century. However, the very first concept mixed science, politics and economy – it was strictly connected with the aspirations of German states to dominate a part of European continent called Mitteleuropa. At the Frankfurt Parliament, which was established in the wake of the March Revolution of 1848, there were multiple competing ideas for the integration of German-speaking areas, including the mitteleuropäische Lösung (Central European Solution) propagated by Austria, which sought to merge the smaller German-speaking states with the multi-ethnic Habsburg Empire, but was opposed by Prussia and others. An imperialistic idea of Mitteleuropa also became popular in the German Empire established in 1871, which experienced intensive economic growth. The term was used when the Union of German Railway Administrations (which had members in the German Empire and Austria-Hungary) established the Mitteleuropäische Eisenbahn-Zeit (Central European Railway Time) time zone, which was applied by the railways from 1 June 1891 and was later widely adopted in civilian life, thus the time zone name shortened to the present-day Central European Time. + +The German term denoting Central Europe was so fashionable that other languages started referring to it when indicating territories from Rhine to Vistula, or even Dnieper, and from the Baltic Sea to the Balkans. An example of this vision of Central Europe may be seen in Joseph Partsch's book of 1903. + +On 21 January 1904, Mitteleuropäischer Wirtschaftsverein (Central European Economic Association) was established in Berlin with economic integration of Germany and Austria–Hungary (with eventual extension to Switzerland, Belgium and the Netherlands) as its main aim. Another time, the term Central Europe became connected to the German plans of political, economic and cultural domination. The "bible" of the concept was Friedrich Naumann's book Mitteleuropa in which he called for an economic federation to be established after World War I. Naumann's idea was that the federation would have at its centre Germany and the Austro-Hungarian Empire but would also include all European nations outside the Triple Entente. The concept failed after the German defeat in World War I and the dissolution of Austria-Hungary. The revival of the idea may be observed during the Hitler era. + +Interwar period + +According to Emmanuel de Martonne, in 1927 the Central European countries included: Austria, Czechoslovakia, Germany, Hungary, Poland, Romania and Switzerland. The author uses both Human and Physical Geographical features to define Central Europe, but he doesn't take into account the legal development or the social, cultural, economic, infrastructural developments in these countries. + +The interwar period (1918–1938) brought a new geopolitical system, as well as economic and political problems, and the concept of Central Europe took on a different character. The centre of interest was moved to its eastern part – the countries that have (re)appeared on the map of Europe: Czechoslovakia, Hungary and Poland. Central Europe ceased to be the area of German aspiration to lead or dominate and became a territory of various integration movements aiming at resolving political, economic and national problems of "new" states, being a way to face German and Soviet pressures. However, the conflict of interests was too big and neither Little Entente nor Intermarium (Międzymorze) ideas succeeded. These matters were not helped by the fact that Czechoslovakia appeared alone as the only multicultural, democratic, and liberal state among its neighbors. The events preceding World War II in Europe—including the so-called Western betrayal/ Munich Agreement were very much enabled by the rising nationalism and ethnocentrism that typified that time period. + +The interwar period brought new elements to the concept of Central Europe. Before World War I, it embraced mainly German states (Germany, Austria), non-German territories being an area of intended German penetration and domination – German leadership position was to be the natural result of economic dominance. After the war, the Eastern part of Central Europe was placed at the centre of the concept. At that time the scientists took an interest in the idea: the International Historical Congress in Brussels in 1923 was committed to Central Europe, and the 1933 Congress continued the discussions. + +The avant-garde movements of Central Europe were an essential part of modernism's evolution, reaching its peak throughout the continent during the 1920s. The Sourcebook of Central European avantgards (Los Angeles County Museum of Art) contains primary documents of the avant-gardes in Austria, Czechoslovakia, Germany, Hungary, and Poland from 1910 to 1930. The manifestos and magazines of Central European radical art circles are well known to Western scholars and are being taught at primary universities of their kind in the western world. + +Mitteleuropa + +With the dissolution of the Holy Roman Empire around 1800, there was a consolidation of power among the Habsburgs and Hohenzollerns as the two major states in the area. They had much in common and occasionally cooperated in various channels, but more often competed. One approach in the various attempts at cooperation, was the conception of a set of supposed common features and interests, and this idea led to the first discussions of a Mitteleuropa in the mid-nineteenth century, as espoused by Friedrich List and Karl Ludwig Bruck. These were mostly based on economic issues. + +Mitteleuropa may refer to a historical concept, or to a contemporary German definition of Central Europe. As a historical concept, the German term Mitteleuropa (or alternatively its literal translation into English, Middle Europe) is an ambiguous German concept. It is sometimes used in English to refer to an area somewhat larger than most conceptions of 'Central Europe'; it refers to territories under Germanic cultural hegemony until World War I (encompassing Austria–Hungary and Germany in their pre-war formations but usually excluding the Baltic countries north of East Prussia). According to Fritz Fischer Mitteleuropa was a scheme in the era of the Reich of 1871–1918 by which the old imperial elites had allegedly sought to build a system of German economic, military and political domination from the northern seas to the Near East and from the Low Countries through the steppes of Russia to the Caucasus. Later on, professor Fritz Epstein argued the threat of a Slavic "Drang nach Westen" (Western expansion) had been a major factor in the emergence of a Mitteleuropa ideology before the Reich of 1871 ever came into being. + +In Germany the connotation was also sometimes linked to the pre-war German provinces east of the Oder-Neisse line. + +The term "Mitteleuropa" conjures up negative historical associations among some elderly people, although the Germans have not played an exclusively negative role in the region. Most Central European Jews embraced the enlightened German humanistic culture of the 19th century. German-speaking Jews from turn of the 20th century Vienna, Budapest and Prague became representatives of what many consider to be Central European culture at its best, though the Nazi version of "Mitteleuropa" destroyed this kind of culture instead. However, the term "Mitteleuropa" is now widely used again in German education and media without negative meaning, especially since the end of communism. In fact, many people from the new states of Germany do not identify themselves as being part of Western Europe and therefore prefer the term "Mitteleuropa". + +Central Europe during World War II +During World War II, Central Europe was largely occupied by Nazi Germany. Many areas were a battle area and were devastated. The mass murder of the Jews depopulated many of their centuries-old settlement areas or settled other people there and their culture was wiped out. Both Adolf Hitler and Joseph Stalin diametrically opposed the centuries-old Habsburg principles of "live and let live" with regard to ethnic groups, peoples, minorities, religions, cultures and languages and tried to assert their own ideologies and power interests in Central Europe. There were various Allied plans for state order in Central Europe for post-war. While Stalin tried to get as many states under his control as possible, Winston Churchill preferred a Central European Danube Confederation to counter these countries against Germany and Russia. There were also plans to add Bavaria and Württemberg to an enlarged Austria. There were also various resistance movements around Otto von Habsburg that pursued this goal. The group around the Austrian priest Heinrich Maier also planned in this direction, which also successfully helped the Allies to wage war by, among other things, forwarding production sites and plans for V-2 rockets, Tiger tanks and aircraft to the USA. So Otto von Habsburg also tried to detach Hungary from its grasp by Nazi Germany and the USSR. There were various considerations to prevent German power in Europe after the war. Churchill's idea of reaching the area around Vienna and Budapest before the Russians via an operation from the Adriatic had not been approved by the Western Allied chiefs of staff. As a result of the military situation at the end of the war, Stalin's plans prevailed and much of Central Europe came under Russian control. + +Central Europe behind the Iron Curtain + +Following World War II, large parts of Europe that were culturally and historically Western became part of the Eastern Bloc. Czech author Milan Kundera (emigrant to France) thus wrote in 1984 about the "Tragedy of Central Europe" in the New York Review of Books. The boundary between the two blocks was called the Iron Curtain. Consequently, the English term Central Europe was increasingly applied only to the westernmost former Warsaw Pact countries (East Germany, Poland, Czechoslovakia, Hungary) to specify them as communist states that were culturally tied to Western Europe. This usage continued after the end of the Warsaw Pact when these countries started to undergo transition. + +The post-World War II period brought blocking of research on Central Europe in the Eastern Bloc countries, as its every result proved the dissimilarity of Central Europe, which was inconsistent with the Stalinist doctrine. On the other hand, the topic became popular in Western Europe and the United States, much of the research being carried out by immigrants from Central Europe. Following the Fall of Communism, publicists and historians in Central Europe, especially the anti-communist opposition, returned to their research. + +According to Karl A. Sinnhuber (Central Europe: Mitteleuropa: Europe Centrale: An Analysis of a Geographical Term) most Central European states were unable to preserve their political independence and became Soviet satellites. Besides Switzerland and Austria, only the marginal European states of Cyprus, Finland, Malta, Sweden and Yugoslavia preserved their political sovereignty to a certain degree, being left out of any military alliances in Europe. + +The opening of the Iron Curtain between Austria and Hungary at the Pan-European Picnic on 19 August 1989 then set in motion a peaceful chain reaction, at the end of which there was no longer an East Germany and the Eastern Bloc had disintegrated. It was the largest escape movement from East Germany since the Berlin Wall was built in 1961. After the picnic, which was based on an idea by Otto von Habsburg to test the reaction of the USSR and Mikhail Gorbachev to an opening of the border, tens of thousands of media-informed East Germans set off for Hungary. The leadership of the GDR in East Berlin did not dare to completely block the borders of their own country and the USSR did not respond at all. +This broke the bracket of the Eastern Bloc and Central Europe subsequently became free from communism. + +Roles +According to American professor Ronald Tiersky, the 1991 summit held in Visegrád, Hungary and attended by the Polish, Hungarian and Czechoslovak presidents was hailed at the time as a major breakthrough in Central European cooperation, but the Visegrád Group became a vehicle for coordinating Central Europe's road to the European Union, while development of closer ties within the region languished. + +American professor Peter J. Katzenstein described Central Europe as a way station in a Europeanization process that marks the transformation process of the Visegrád Group countries in different, though comparable ways. According to him, in Germany's contemporary public discourse "Central European identity" refers to the civilizational divide between Catholicism and Eastern Orthodoxy. He says there is no precise, uncontestable way to decide whether Lithuania, Latvia, Estonia, Serbia, Croatia, Slovenia, Romania, or Bulgaria are parts of Central Europe. + +Definitions + +The issue of how to name and define the Central European area is subject to debates. Very often, the definition depends on the nationality and historical perspective of its author. The concept of "Central Europe" appeared in the 19th century. First, it was understood as a contact zone between the two main European regions of modern times – the Southern (Mediterranean and Catholic) and the Northern (Baltic and Protestant) areas. However, under the influenced of great power rivalry since the late 19th century, the term was redefined along the geopolitical divisions of Europe. Throughout the 20th century, thinkers portrayed "Central Europe" either as a separate region or a buffer zone between the Western and Eastern Europe, but disagreed either it was historically or culturally gravitating more towards the East or the West. The most recent wave of literature underlines the ties between Central and Western Europe. + +In the early nineteenth century, the terms "Middle" or "Central" Europe (known as "Mitteleuropa" in German and "Europe centrale" in French) were introduced in geographical scholarship in both German and French languages. At first, these terms were linked to the regions spanning from the Pyrenees to the Danube, which, according to German authors, could be united under German authority. However, after the Franco-Prussian war of 1870, the French began to exclude France from this area, and later the Germans also adopted this perspective by the end of World War I. +The concept of "Central" or "Middle Europe," understood as a region with strong German influence, lost a significant part of its popularity after WWI and was completely dismissed after WWII. Two defeats of Germany in the world wars, but also such Cold War realties as the division of Germany, together with the Communist-led isolation of Poland, Czechoslovakia, Hungary from the Western world as well as an almost complete disappearance of German-speaking communities in these countries, turned the concept of "Central/Middle Europe" into an anachronism. On the other side, the non-German areas of Central Europe were reconceptualised as belonging to the expanded "Eastern Europe," primarily associated with the Soviet sphere of influence in the late 1940s–1980s. Unsurprisingly, this geographical framework lost its attraction after the end of the Cold War. Instead Poland, Czechoslovakia, Hungary and other post-Communist countries rather re-identified themselves in the 1990s as "Central European." But avoiding the stained wording of "Middle Europe," more strongly associated with the German-past of the region, this reinvented and reduced notion of "Central Europe" now straightforwardly excludes Germany. Altogether, if the original term "Central Europe" comprised areas from the Pyrenees to the Carpathians, it excluded France since 1870/1918, and Germany since 1918/1945, reducing its coverage chiefly to Poland, Czechia, Slovakia, and Hungary and to some their eastern and southern neighbours. + +Academic + +The main proposed regional definitions, gathered by Polish historian Jerzy Kłoczowski, include: + + West-Central and East-Central Europe – this conception, presented in 1950, distinguishes two regions in Central Europe: German West-Centre, with imperial tradition of the Reich, and the East-Centre covered by variety of nations from Finland to Greece, placed between great empires of Scandinavia, Germany, Italy and the Soviet Union. + Central Europe as the area of cultural heritage of the Polish–Lithuanian Commonwealth – Ukrainian, Belarusian and Lithuanian historians, in cooperation (since 1990) with Polish historians, insist on the importance of the concept. + Central Europe as a region connected to the Western civilisation since the foundation of the local states and churches, including countries such as the Polish–Lithuanian Commonwealth, Kingdom of Croatia, Holy Roman Empire, later German Empire and the Habsburg monarchy, the Kingdom of Hungary and the Crown of Bohemia. Central Europe understood in this way borders on Russia and South-Eastern Europe, but the exact frontier of the region is difficult to determine. + + Central Europe as the area of cultural heritage of the Habsburg Empire (later Austria-Hungary) – a concept which is popular in regions along the river Danube: Austria, the Czech Republic and Slovakia, Slovenia, large parts of Croatia, Romania and Serbia, also smaller parts of Poland and Ukraine. In Hungary, the narrowing of Central Europe into former Habsburg lands is not popular. + A concept underlining the links connecting Belarus, Moldova and Ukraine with Russia and treating the Russian Empire together with the whole Slavic Orthodox population as one entity – this position is taken by the Russian historiography. + A concept putting the accent on links with the West, especially from the 19th century and the grand period of liberation and formation of Nation-states – this idea is represented by the South-Eastern states, which prefer the enlarged concept of the "East Centre" expressing their links with Western culture. + +Former University of Vienna professor Lonnie R. Johnson points out criteria to distinguish Central Europe from Western, Eastern and Southeast Europe: + + One criterion for defining Central Europe is the frontiers of medieval empires and kingdoms that largely correspond to the religious frontiers between the Catholic West and the Orthodox East. The pagans of Central Europe were converted to Catholicism while in Southeastern and Eastern Europe they were brought into the fold of the Eastern Orthodox Church. + Multinational empires were a characteristic of Central Europe. Hungary and Poland, small and medium-size states today, were empires during their early histories. The historical Kingdom of Hungary was until 1918 three times larger than Hungary is today, while Poland was the largest state in Europe in the 16th century. Both these kingdoms housed a wide variety of different peoples. + +He also thinks that Central Europe is a dynamic historical concept, not a static spatial one. For example, Lithuania, a fair share of Belarus and western Ukraine are in Eastern Europe today, but years ago they were in Polish–Lithuanian Commonwealth. Johnson's study on Central Europe received acclaim and positive reviews in the scientific community. However, according to Romanian researcher Maria Bucur this very ambitious project suffers from the weaknesses imposed by its scope (almost 1600 years of history). + +Encyclopedias, gazetteers, dictionaries +The Columbia Encyclopedia defines Central Europe as: Germany, Switzerland, Liechtenstein, Austria, Poland, the Czech Republic, Slovakia, and Hungary. The World Factbook uses a similar definition and adds also Slovenia. Encarta Encyclopedia and Encyclopædia Britannica do not clearly define the region, but Encarta places the same countries into Central Europe in its individual articles on countries, adding Slovenia in "south central Europe". + +The German Encyclopaedia Meyers Grosses Taschenlexikon (Meyers Big Pocket Encyclopedia), 1999, defines Central Europe as the central part of Europe with no precise borders to the East and West. The term is mostly used to denominate the territory between the Schelde to Vistula and from the Danube to the Moravian Gate. Usually the countries considered to be Central European are Austria, Croatia, the Czech Republic, Germany, Hungary, Liechtenstein, Poland, Slovakia, Slovenia, Switzerland. + +According to Meyers Enzyklopädisches Lexikon, Central Europe is a part of Europe composed of Austria, Belgium, the Czech Republic, Slovakia, Germany, Hungary, Luxembourg, Netherlands, Poland, Romania and Switzerland, and northern marginal regions of Italy and Yugoslavia (northern states – Croatia, Serbia and Slovenia), as well as northeastern France. + +The German (Standing Committee on Geographical Names), which develops and recommends rules for the uniform use of geographical names, proposes two sets of boundaries. The first follows international borders of current countries. The second subdivides and includes some countries based on cultural criteria. In comparison to some other definitions, it is broader, including Luxembourg, Croatia, Estonia, Latvia, Lithuania, and in the second sense, parts of Russia, Belarus, Ukraine, Romania, Serbia, Italy, and France. + +Geographical + +There is no general agreement either on what geographic area constitutes Central Europe, nor on how to further subdivide it geographically. + +At times, the term "Central Europe" denotes a geographic definition as the Danube region in the heart of the continent, including the language and culture areas which are today included in the states of Croatia, the Czech Republic, Hungary, Poland, Romania, Serbia, Slovakia, Slovenia and usually also Austria and Germany, but never Russia and other countries of the former Soviet Union towards the Ural mountains. + +Governmental and standards organisations +The terminology EU11 countries refer the Central, Eastern and Baltic European member states which accessed in 2004 and after: in 2004 Czech Republic, Estonia, Latvia, Lithuania, Hungary, Poland, Slovenia, and Slovakia; in 2007 Bulgaria, Romania; and in 2013 Croatia. + +Map gallery + +States + +The choice of states that make up Central Europe is an ongoing source of controversy. Although views on which countries belong to Central Europe are vastly varied, according to many sources (see section Definitions) the region includes some or all of the states listed in the sections below: + +Austria +Czech Republic +Germany +Hungary +Liechtenstein +Poland +Slovakia +Slovenia +Switzerland + +Depending on the context, Central European countries are sometimes not seen as a specific group, but sorted as either Eastern or Western European countries. In this case, Germany, Austria, and Switzerland are often placed in Western Europe while Poland, the Czech Republic, Slovakia, Hungary, and Slovenia are placed in Eastern Europe. + +Furthermore, Slovenia and Hungary are sometimes incorporated in definitions of Southeast Europe, a region with which they share historical, cultural and geopolitical ties. + +Other countries and regions +Some sources also add regions of neighbouring countries for historical reasons (the former Austro-Hungarian and German Empires, and modern Estonia, Latvia and Lithuania), or based on geographical and/or cultural reasons: + +Croatia (alternatively placed in Southeast Europe) +Romania (Transylvania, along with Banat, Crișana, Maramureș, Bukovina and Muntenia along with Oltenia) +Russia (Kaliningrad Oblast) +Serbia (primarily Vojvodina and Northern Belgrade) +Ukraine (Transcarpathia, Galicia and Northern Bukovina) +Luxembourg + The three Baltic Countries (Lithuania, Latvia, and Estonia), geographically in Northern Europe, have been considered part of Central Europe in the German tradition of the term, Mitteleuropa. Benelux countries are generally considered a part of Western Europe, rather than Central Europe. Nevertheless, they are occasionally mentioned in the Central European context due to cultural, historical and linguistic ties. +Italy (South Tyrol, Trentino, Trieste and Gorizia, Friuli, Lombardy, and Veneto or all of Northern Italy) +France (Alsace, Franconian Lorraine, occasionally the whole of Lorraine, Franche-Comté, the Ardennes and Savoy) +Belgium (the Ardennes) + +Geography + +Geography defines Central Europe's natural borders with the neighbouring regions to the north across the Baltic Sea, namely Northern Europe (or Scandinavia), and to the south across the Alps, the Apennine peninsula (or Italy), and the Balkan peninsula across the Soča–Krka–Sava–Danube line. The borders to Western Europe and Eastern Europe are geographically less defined, and for this reason the cultural and historical boundaries migrate more easily west–east than south–north. The river Rhine, which runs south–north through Western Germany, is an exception. + +Southwards, the Pannonian Plain is bounded by the rivers Sava and Danube – and their respective floodplains. The Pannonian Plain stretches over the following countries: Austria, Croatia, Hungary, Romania, Serbia, Slovakia and Slovenia, and touches borders of Bosnia and Herzegovina and Ukraine ("peri- Pannonian states"). + +As the southeastern division of the Eastern Alps, the Dinaric Alps extend for 650 kilometres along the coast of the Adriatic Sea (northwest-southeast), from the Julian Alps in the northwest down to the Šar-Korab massif, north–south. According to the Freie Universität Berlin, this mountain chain is classified as South Central European. The city of Trieste in this area, for example, expressly sees itself as a città mitteleuropea. This is particularly because it lies at the interface between the Latin, Slavic, Germanic, Greek and Jewish culture on the one hand and the geographical area of the Mediterranean and the Alps on the other. A geographical and cultural assignment is made. + +The Central European flora region stretches from Central France (the Massif Central) to Central Romania (Carpathians) and Southern Scandinavia. + +Demography + +Central Europe is one of the continent's most populous regions. It includes countries of varied sizes, ranging from tiny Liechtenstein to Germany, the second largest European country by population. Demographic figures for countries entirely located within notion of Central Europe ("the core countries") number around 165 million people, out of which around 82 million are residents of Germany. Other populations include: Poland with around 38.5 million residents, Czech Republic at 10.5 million, Hungary at 10 million, Austria with 8.8 million, Switzerland with 8.5 million, Slovakia at 5.4 million, Slovenia with 2.1 million and Liechtenstein at a bit less than 40,000. + +If the countries which are occasionally included in Central Europe were counted in, partially or in whole – Croatia (4.3 million), Romania (20 million), Lithuania (2.9 million), Latvia (2 million), Estonia (1.3 million), Serbia (7.1 million) – it would contribute to the rise of between 25 and 35 million, depending on whether regional or integral approach was used. If smaller, western and eastern historical parts of Central Europe would be included in the demographic corpus, further 20 million people of different nationalities would also be added in the overall count, it would surpass the 200 million people figure. + +Economy + +Currencies +Currently, the members of the Eurozone include Austria, Croatia, Germany, Luxembourg, Slovakia, and Slovenia. The Czech Republic, Hungary and Poland use their own currencies (Czech koruna, Hungarian forint, Polish złoty), but are obliged to adopt the Euro. Switzerland uses its own currency (Swiss franc), as does Serbia (Serbian dinar) and Romania (Romanian leu). + +Human Development Index + +In 2018, Switzerland topped the HDI list among Central European countries, also ranking No. 2 in the world. Serbia rounded out the list at No. 11 (67 world). + +Globalisation + +The index of globalization in Central European countries (2016 data): +Switzerland topped this list as well (#1 world). + +Prosperity Index + +Legatum Prosperity Index demonstrates an average and high level of prosperity in Central Europe (2018 data). Switzerland topped the index (#4 world). + +Corruption + +Most countries in Central Europe tend to score above the average in the Corruption Perceptions Index (2018 data), led by Switzerland, Germany, and Austria. + +Rail + +Central Europe contains the continent's earliest railway systems, whose greatest expansion was recorded in Austro-Hungarian and German territories between 1860-1870s. By the mid-19th century Berlin, Vienna, and Buda/Pest were focal points for network lines connecting industrial areas of Saxony, Silesia, Bohemia, Moravia and Lower Austria with the Baltic (Kiel, Szczecin) and Adriatic (Rijeka, Trieste). Rail infrastructure in Central Europe remains the densest in the world. Railway density, with total length of lines operated (km) per 1,000 km2, is the highest in the Czech Republic (198.6), Poland (121.0), Slovenia (108.0), Germany (105.5), Hungary (98.7), Serbia (49.2), Slovakia (73.9) and Croatia (72.5). + +River transport and canals +Before the first railroads appeared in the 1840s, river transport constituted the main means of communication and trade. Earliest canals included Plauen Canal (1745), Finow Canal, and also Bega Canal (1710) which connected Timișoara to Novi Sad and Belgrade via Danube. The most significant achievement in this regard was the facilitation of navigability on Danube from the Black sea to Ulm in the 19th century. + +The economies of Austria, Croatia, the Czech Republic, Germany, Hungary, Poland, Slovakia, Slovenia and Switzerland tend to demonstrate high complexity. Industrialisation reached Central Europe relatively early: the Czech lands by 1797, Luxembourg and Germany by 1860, Poland, Slovakia and Switzerland by 1870, Austria, Croatia, Hungary, Liechtenstein, Romania, Serbia and Slovenia by 1880. + +Agriculture +Central European countries are some of the most significant food producers in the world. Germany is the world's largest hops producer with 34.27% share in 2010, third producer of rye and barley, 5th rapeseed producer, sixth largest milk producer, and fifth largest potato producer. Poland is the world's largest triticale producer, second largest producer of raspberries, currants, third largest of rye, the fifth apple and buckwheat producer, and seventh largest producer of potatoes. Czech Republic is world's fourth largest hops producer and 8th producer of triticale. Hungary is world's fifth hops and seventh largest triticale producer. Serbia is world's second largest producer of plums and second largest of raspberries. Slovenia is world's sixth hops producer. + +Business +Central European business has a regional organisation, Central European Business Association (CEBA), founded in 1996 in New York as a non-profit organization dedicated to promoting business opportunities within Central Europe and supporting the advancement of professionals in America with a Central European background. + +Tourism +Central European countries, especially Austria, Croatia, Germany and Switzerland are some of the most competitive tourism destinations. + +Education + +Languages + +Various languages are taught in Central Europe, with certain languages being more popular in different countries. + +Education performance + +Student performance has varied across Central Europe, according to the Programme for International Student Assessment. In the 2012 study, countries scored medium, below or over the average scores in three fields studied. + +Higher education + +Universities +The first university established east of France and north of the Alps was in Prague in 1348 by Charles IV, Holy Roman Emperor. The Charles University was modeled upon the University of Paris and initially included the faculty of law, medicine, philosophy, and theology. + +Central European University + +In 1991, Ernest Gellner proposed the establishment of a truly Central European institution of higher learning in Prague (1991–1995). Eventually, the Central European University (CEU) project was taken on and financially supported by the Hungarian philanthropist George Soros, who had provided an endowment of US$880 million, making the university one of the wealthiest in Europe. Over its 30-year history CEU has become one of the most internationally diverse and recognisable universities in the world. For example, as of 2019, 1217 students were enrolled in the university, of which 962 were international students, making the student body the fourth most international in the world. CEU offers highly selective programs with a student to faculty ratio of 7:1. In 2021, the admission rate into its programs was 13%. CEU has thus become a leading global university in Europe promoting a distinctively Central European perspective while emphasizing academic rigor, applied research, and academic honesty and integrity. CEU is a founding member of CIVICCA, a group of prestigious European higher education institutions in the social sciences, humanities, business management and public policy, such as Sciences Po (France), The London School of Economics and Political Science (UK), Bocconi University (Italy) and the Stockholm School of Economics (Sweden). In 2019, Central European University leadership announced their preparatory work on moving CEU to Vienna due to legal constraints against academic freedom in Hungary. + +Culture and society + +Research +Research centres of Central European literature include Harvard University (Cambridge, MA), Purdue University, and Central European Studies Programme (CESP), Masaryk University, Brno, Czech Republic. + +Architecture + +Religion + +Central European countries are mostly Catholic (Austria, Croatia, Liechtenstein, Luxembourg, Poland, Slovakia, Slovenia) or historically both Catholic and Protestant, (the Czech Republic, Germany, Hungary and Switzerland). Large Protestant groups include Lutheran, Calvinist, and the Unity of the Brethren affiliates. Significant populations of Eastern Catholicism and Old Catholicism are also prevalent throughout Central Europe. + +Central Europe has been the center of the Protestant movement for centuries, with the majority of Protestants suppressed and annihilated during the Counterreformation. + +Historically, people in Bohemia in today's Czech Republic were one of the very first Protestants in Europe. As a result of the Thirty Years' War following the Bohemian Revolt, many Czechs were either killed, executed (see for Old Town Square execution), forcibly turned into Roman Catholics, or emigrated to Scandinavia and the Low Countries. In the aftermath of the Thirty Years' War, the number of inhabitants in the Kingdom of Bohemia decreased from three million to only 800,000 due to multiple factors, including devastating ongoing battles such as the significant Battle of White Mountain and the Battle of Prague (1648). However, in recent years, most Czechs report as overwhelmingly non-religious, with some describing themselves as Catholic (10.3%). + +Before the Holocaust (1941–45), there was also a sizeable Ashkenazi Jewish community in the region, numbering approximately 16.7 million people. + +Currently, a number of Central European countries present themselves as more secular or non-religious, including a atheists, undeclared, and non-religious people. For example, people in the Czech Republic report the following figures (non-religious 34.2% and undeclared 45.2%), meanwhile persons in Germany (non-religious 38%), and Slovenia (atheist 14.7%), Luxembourg (23.4% non-religious), Switzerland (20.1%), Hungary (27.2% undeclared, 16.7% "non-religious" and 1.5% atheists), Slovakia (atheists and non-religious 13.4%, "not specified" 10.6%) Austria (19.7% of "other or none"), Liechtenstein (10.6% with no religion), Croatia (4%) and Poland (3% of non-believers/agnostics and 1% of undeclared). + +Cuisine +Central European cuisine has evolved through centuries due to social and political change. Most countries share many dishes. The most popular dishes typical to Central Europe are sausages and cheeses, where the earliest evidence of cheesemaking in the archaeological record dates back to 5,500 BCE (Kuyavia region, Poland). Other foods widely associated with Central Europe are goulash and beer. The list of countries by beer consumption per capita is led by the Czech Republic, followed by Germany and Austria. Poland comes 5th, Croatia 7th and Slovenia 13th. + +Human rights +Generally, the countries in the region are progressive on the issue of human rights: death penalty is illegal in all of them, corporal punishment is outlawed in most of them and people of both genders can vote in elections. However, Central European countries are divided on the subject of same-sex marriage and abortion. Austria, the Czech Republic, Germany, and Poland also have a history of participation in the CIA's extraordinary rendition and detention program, according to the Open Society Foundations. + +Literature +Regional writing tradition revolves around the turbulent history of the region, as well as its cultural diversity. Its existence is sometimes challenged. Specific courses on Central European literature are taught at Stanford University, Harvard University and Jagiellonian University The as well as cultural magazines dedicated to regional literature. Angelus Central European Literature Award is an award worth 150,000.00 PLN (about $50,000 or £30,000) for writers originating from the region. Likewise, the Vilenica International Literary Prize is awarded to a Central European author for "outstanding achievements in the field of literature and essay writing". + +Media + +Sport +There is a number of Central European Sport events and leagues. They include: + +Central European Tour Miskolc GP (Hungary)* +Central European Tour Budapest GP (Hungary) +2008 Central Europe Rally (Romania and Hungary)* +2023 Central Europe Rally (Germany, Austria and Czech Republic) +Central European Football League (Austria, Croatia, Hungary, Serbia, Slovakia, Slovenia and Turkey) +Central European International Cup (Austria, Czechoslovakia, Hungary, Italy, Poland, Switzerland and Yugoslavia; 1927–1960) +Central Europe Throwdown* + +Football is one of the most popular sports. Countries of Central Europe hosted several major competitions. Germany hosted two FIFA World Cups (1974 and 2006) and the UEFA Euro 1988. Yugoslavia hosted the UEFA Euro 1976 before the competition expanded to 8 teams. Recently, the 2008 and 2012 UEFA European Championships were held in Austria & Switzerland and Poland & Ukraine respectively. The UEFA Euro 2024 will be hosted by Germany. + +Politics + +Organisations +Central Europe is a birthplace of regional political organisations: + +Visegrád Group +Central European Defence Cooperation +Three Seas Initiative +Centrope +Central European Initiative +Middleeuropean Initiative +Central European Free Trade Agreement + +Democracy Index + +Central Europe is a home to some of world's oldest democracies. However, most of them have been impacted by totalitarianism, particularly Fascism and Nazism. Germany and Italy occupied all Central European countries, except Switzerland. In all occupied countries, the Axis powers suspended democracy and installed puppet regimes loyal to the occupation forces. Also, they forced conquered countries to apply racial laws and formed military forces for helping German and Italian struggle against Communists. After World War II, almost the whole of Central Europe (the Eastern and Middle part) had been transformed into communist states, most of which had been occupied and later allied with the Soviet Union, often against their will through forged referendum (e.g., Polish people's referendum in 1946) or force (northeast Germany, Poland, Hungary et alia). Nevertheless, these experiences have been dealt in most of them. Most of Central European countries score very highly in the Democracy Index. + +Global Peace Index + +In spite of its turbulent history, Central Europe is currently one of world's safest regions. Most Central European countries are in top 20%. + +Central European Time + +The time zone used in most parts of the European Union is a standard time which is 1 hour ahead of Coordinated Universal Time. Countries using CET include: + Hungary + Slovakia + Czech Republic + Germany + Austria + Poland (1893) +Serbia (1884) + Slovenia + Switzerland + Liechtenstein + +In popular culture +Central Europe is mentioned in the 35th episode of Lovejoy, entitled "The Prague Sun", filmed in 1992. While walking over the well-regarded and renowned Charles Bridge in Prague, the main character, Lovejoy, says: "I've never been to Prague before. Well, it is one of the great unspoiled cities in Central Europe. Notice: I said: 'Central', not 'Eastern'! The Czechs are a bit funny about that, they think of Eastern Europeans as turnip heads." + +Wes Anderson's Oscar-winning film The Grand Budapest Hotel depicts a fictional grand hotel located somewhere in Central Europe which is in actuality modeled on the Grandhotel Pupp in Karlovy Vary in the Czech Republic. The film is a celebration of the 1920s and 1930s Central Europe with its artistic splendor and societal sensibilities. + +See also + + Central and Eastern Europe + Central European Initiative + Central European Time (CET) + Central European University + East-Central Europe + Eurovoc + Geographical midpoint of Europe + Life zones of central Europe + Międzymorze (Intermarum) + Mitteleuropa + +References + +Citations + +General and cited references + + + + + + + + + + + + + Shared Pasts in Central and Southeast Europe, 17th–21st Centuries. Eds. G. Demeter, P. Peykovska. 2015 + +Further reading + Ágh, Attila. Declining Democracy in East-Central Europe: The Divide in the EU and Emerging Hard Populism (Edward Elgar Publishing, 2019). + Baldersheim, Harald, ed. Local democracy and the processes of transformation in East-Central Europe (Routledge, 2019). + + + Centre of Central European Studies, Agrarianism in Central and Eastern Europe in the 19th and 20th Centuries (2013) online review. + + Gardner, Hall, ed. Central and South-central Europe in Transition (Praeger, 2000) + + + Lederer, David. Early Modern Central European History (2011) online review by Linnéa Rowlatt + + + + + + 'Mapping Central Europe' in hidden europe, 5, pp. 14–15 (November 2005) + +External links + + Journal of East Central Europe + Central European Political Science Association's journal "Politics in Central Europe" + CEU Political Science Journal (PSJ) + Central European Journal of International and Security Studies + Central European Political Studies Review + The Centrope region + Maps of Europe and European countries + CENTRAL EUROPE 2020 + Central Europe Economy + UNHCR Office for Central Europe + + +Regions of Europe +Canada has a vast geography that occupies much of the continent of North America, sharing a land border with the contiguous United States to the south and the U.S. state of Alaska to the northwest. Canada stretches from the Atlantic Ocean in the east to the Pacific Ocean in the west; to the north lies the Arctic Ocean. Greenland is to the northeast with a shared border on Hans Island. To the southeast Canada shares a maritime boundary with France's overseas collectivity of Saint Pierre and Miquelon, the last vestige of New France. By total area (including its waters), Canada is the second-largest country in the world, after Russia. By land area alone, however, Canada ranks fourth, the difference being due to it having the world's largest proportion of fresh water lakes. Of Canada's thirteen provinces and territories, only two are landlocked (Alberta and Saskatchewan) while the other eleven all directly border one of three oceans. + +Canada is home to the world's northernmost settlement, Canadian Forces Station Alert, on the northern tip of Ellesmere Island—latitude 82.5°N—which lies from the North Pole. Much of the Canadian Arctic is covered by ice and permafrost. Canada has the longest coastline in the world, with a total length of ; additionally, its border with the United States is the world's longest land border, stretching . Three of Canada's Arctic islands, Baffin Island, Victoria Island and Ellesmere Island, are among the ten largest in the world. + +Canada can be divided into seven physiographic regions: the Canadian Shield, the interior plains, the Great Lakes-St. Lawrence Lowlands, the Appalachian region, the Western Cordillera, Hudson Bay Lowlands and the Arctic Archipelago. Canada is also divided into fifteen terrestrial and five marine ecozones, encompassing over 80,000 classified species of life. Since the end of the last glacial period, Canada has consisted of eight distinct forest regions, including extensive boreal forest on the Canadian Shield; 42 percent of the land acreage of Canada is covered by forests (approximately 8 percent of the world's forested land), made up mostly of spruce, poplar and pine. Canada has over 2,000,000 lakes—563 greater than —which is more than any other country, containing much of the world's fresh water. There are also freshwater glaciers in the Canadian Rockies, the Coast Mountains and the Arctic Cordillera. A recent global remote sensing analysis also suggested that there were 6,477 km2 of tidal flats in Canada, making it the 5th ranked country in terms of how much tidal flat occurs there. Protected areas of Canada and National Wildlife Areas have been established to preserve ecosystems. + +Canada is geologically active, having many earthquakes and potentially active volcanoes, notably the Mount Meager massif, Mount Garibaldi, Mount Cayley, and the Mount Edziza volcanic complex. Average winter and summer high temperatures across Canada range from Arctic weather in the north, to hot summers in the southern regions, with four distinct seasons. + +Physiography + +Canada covers and a panoply of various geoclimatic regions, of which there are seven main regions. Canada also encompasses vast maritime terrain, with the world's longest coastline of . The physical geography of Canada is widely varied. Boreal forests prevail throughout the country, ice is prominent in northerly Arctic regions and through the Canadian Rocky Mountains, and the relatively flat Canadian Prairies in the southwest facilitate productive agriculture. The Great Lakes feed the St. Lawrence River (in the southeast) where lowlands host much of Canada's population. + +The National Topographic System is used by Natural Resources Canada for providing general purpose topographic maps of the country. The maps provide details on landforms and terrain, lakes and rivers, forested areas, administrative zones, populated areas, roads and railways, as well as other man-made features. These maps are used by all levels of government and industry for forest fire and flood control (as well as other environmental issues), depiction of crop areas, right-of-way, real estate planning, development of natural resources and highway planning. + +Appalachian Mountains +The Appalachian mountain range extends from Alabama in southern United States through the Gaspé Peninsula and the Atlantic Provinces, creating rolling hills indented by river valleys. It also runs through parts of southern Quebec. + +The Appalachian Mountains (more specifically the Chic-Choc, Notre Dame, and Long Range Mountains) are an old and eroded range of mountains, approximately 380 million years in age. Notable mountains in the Appalachians include Mount Jacques-Cartier (Quebec, ), Mount Carleton (New Brunswick, ), The Cabox (Newfoundland, ). Parts of the Appalachians are home to a rich endemic flora and fauna and are considered to have been nunataks during the last glaciation era. + +Great Lakes and St. Lawrence Lowlands + +Canadian Shield + +The northeastern part of Alberta, northern parts of Saskatchewan, Manitoba, Ontario and Quebec, all of Labrador and the Great Northern Peninsula of Newfoundland, eastern mainland Northwest Territories, most of Nunavut's mainland and, of its Arctic Archipelago, Baffin Island and significant bands through Somerset, Southampton, Devon and Ellesmere islands are located on a vast rock base known as the Canadian Shield. The Shield mostly consists of eroded hilly terrain and contains many lakes and important rivers used for hydroelectric production, particularly in northern Quebec and Ontario. The Shield also encloses an area of wetlands around the Hudson Bay. Some particular regions of the Shield are referred to as mountain ranges, including the Torngat and Laurentian Mountains. + +The Shield cannot support intensive agriculture, although there is subsistence agriculture and small dairy farms in many of the river valleys and around the abundant lakes, particularly in the southern regions. Boreal forest covers much of the shield, with a mix of conifers that provide valuable timber resources in areas such as the Central Canadian Shield forests ecoregion that covers much of Northern Ontario. + +The Canadian Shield is known for its vast mineral reserves such as emeralds, diamonds and copper, and is there also called the "mineral house". + +Canadian Interior Plains + +Canadian Arctic + +While the largest part of the Canadian Arctic is composed of seemingly endless permafrost and tundra north of the tree line, it encompasses geological regions of varying types: the Arctic Cordillera (with the British Empire Range and the United States Range on Ellesmere Island) contains the northernmost mountain system in the world. The Arctic Lowlands and Hudson Bay lowlands comprise a substantial part of the geographic region often designated as the Canadian Shield (in contrast to the sole geologic area). The ground in the Arctic is mostly composed of permafrost, making construction difficult and often hazardous, and agriculture virtually impossible. + +The Arctic, when defined as everything north of the tree line, covers most of Nunavut and the northernmost parts of Northwest Territories, Yukon, Manitoba, Ontario, Quebec and Labrador. The archipelago consists of 36,563 islands, of which 94 are classified as major islands, being larger than , and cover a total area of . + +Western Cordillera + +The Coast Mountains in British Columbia run from the lower Fraser River and the Fraser Canyon northwestward, separating the Interior Plateau from the Pacific Ocean. Its southeastern end is separated from the North Cascades by the Fraser Lowland, where nearly a third of Western Canada's population reside. + +The coastal flank of the Coast Mountains is characterized by an intense network of fjords and associated islands, very similar to the Norwegian coastline in Northern Europe; while their inland side transitions to the high plateau with dryland valleys notable for a series of large alpine lakes similar to those in southern Switzerland, beginning in deep mountains and ending in flatland. They are subdivided in three main groups, the Pacific Ranges between the Fraser River and Bella Coola, the Kitimat Ranges from there northwards to the Nass River, and the Boundary Ranges from there to the mountain terminus in Yukon at Champagne Pass and Chilkat Pass northwest of Haines, Alaska. The Saint Elias Mountains lie to their west and northwest, while the Yukon Ranges and Yukon Basin lie to their north. On the inland side of the Boundary Ranges are the Tahltan and Tagish Highlands and also the Skeena Mountains, part of the Interior Mountains system, which also extend southwards on the inland side of the Kitimat Ranges. + +The terrain of the main spine of the Coast Mountains is typified by heavy glaciation, including several very large icefields of varying elevation. Of the three subdivisions, the Pacific Ranges are the highest and are crowned by Mount Waddington, while the Boundary Ranges contain the largest icefields, the Juneau Icefield being the largest. The Kitimat Ranges are lower and less glacier-covered than either of the other two groupings, but are extremely rugged and dense. + +The Coast Mountains are made of igneous and metamorphic rock from an episode of arc volcanism related to subduction of the Kula and Farallon Plates during the Laramide orogeny about 100 million years ago. The widespread granite forming the Coast Mountains formed when magma intruded and cooled at depth beneath volcanoes of the Coast Range Arc whereas the metamorphic formed when intruding magma heated the surrounding rock to produce schist. + +The Insular Mountains extend from Vancouver Island in the south to the Haida Gwaii in the north on the British Columbia Coast. It contains two main mountain ranges, the Vancouver Island Ranges on Vancouver Island and the Queen Charlotte Mountains on Haida Gwaii. + +Hudson Bay Lowlands + +Extreme points + +The northernmost point of land within the boundaries of Canada is Cape Columbia, Ellesmere Island, Nunavut . The northernmost point of the Canadian mainland is Zenith Point on Boothia Peninsula, Nunavut . The southernmost point is Middle Island, in Lake Erie, Ontario (41°41′N 82°40′W); the southernmost water point lies just south of the island, on the Ontario–Ohio border (41°40′35″N). The southernmost point of the Canadian mainland is Point Pelee, Ontario . The lowest point is sea level at 0 m, whilst the highest point is Mount Logan, Yukon, at 5,959 m / 19,550 ft . + +The westernmost point is Boundary Peak 187 (60°18′22.929″N 141°00′7.128″W) at the southern end of the Yukon–Alaska border, which roughly follows 141°W but leans very slightly east as it goes North . The easternmost point is Cape Spear, Newfoundland (47°31′N 52°37′W) . The easternmost point of the Canadian mainland is Elijah Point, Cape St. Charles, Labrador (52°13′N 55°37′W) . + +The Canadian pole of inaccessibility is allegedly near Jackfish River, Alberta (59°2′N 112°49′W). The furthest straight-line distance that can be travelled to Canadian points of land is between the southwest tip of Kluane National Park and Reserve (next to Mount Saint Elias) and Cripple Cove, Newfoundland (near Cape Race) at a distance of . + +Climatology + +Climate varies widely from region to region. Winters can be harsh in many parts of the country, particularly in the interior and Prairie provinces, which experience a continental climate, where daily average temperatures are near , but can drop below with severe wind chills. In non-coastal regions, snow can cover the ground for almost six months of the year, while in parts of the north snow can persist year-round. Coastal British Columbia has a temperate climate, with a mild and rainy winter. On the east and west coasts, average high temperatures are generally in the low 20s °C (70s °F), while between the coasts, the average summer high temperature ranges from , with temperatures in some interior locations occasionally exceeding . + +Much of Northern Canada is covered by ice and permafrost; however, the future of the permafrost is uncertain because the Arctic has been warming at three times the global average as a result of climate change in Canada. Canada's annual average temperature over land has warmed by , with changes ranging from in various regions, since 1948. The rate of warming has been higher across the North and in the Prairies. In the southern regions of Canada, air pollution from both Canada and the United States—caused by metal smelting, burning coal to power utilities, and vehicle emissions—has resulted in acid rain, which has severely impacted waterways, forest growth and agricultural productivity in Canada. + +Biogeography + +Canada is divided into fifteen major terrestrial and five marine ecozones, that are further subdivided into 53 ecoprovinces, 194 ecoregions, and 1,027 ecodistricts. These eco-areas encompass over 80,000 classified species of Canadian wildlife, with an equal number yet to be formally recognized or discovered. Due to pollution, loss of biodiversity, over-exploitation of commercial species, invasive species, and habitat loss, there are currently more than 800 wild life species at risk of being lost. + +Canada's major biomes are the tundra, boreal forest, grassland, and temperate deciduous forest. British Columbia contains several smaller biomes, including; mountain forest which extends to Alberta, and a small temperate rainforest along the Pacific coast, the semi arid desert located in the Okanagan and alpine tundra in the higher mountainous regions. + +Over half of Canada's landscape is intact and relatively free of human development. Approximately half of Canada is covered by forest, totaling around . The boreal forest of Canada is considered to be the largest intact forest on earth, with around undisturbed by roads, cities or industry. The Canadian Arctic tundra is the second-largest vegetation region in the country consisting of dwarf shrubs, sedges and grasses, mosses and lichens. + +Approximately 12.1 percent of the nation's landmass and freshwater are conservation areas, including 11.4 percent designated as protected areas. Approximately 13.8 percent of its territorial waters are conserved, including 8.9 percent designated as protected areas. + +Palaeogeography + +Hydrography + +Canada holds vast reserves of water: its rivers discharge nearly 7% of the world's renewable water supply, Canada has over 2,000,000 lakes—563 greater than —which is more than any other country and has the third largest amount of glacier water. Canada is also home to about twenty five percent (134.6 million ha) of the world's wetlands that support a vast array of local ecosystems. + +Canada's waterways host forty-seven rivers of at least in length, with the two longest being the Mackenzie River, that begins at Great Slave Lake and ends in the Arctic Ocean, with its drainage basin covering a large part of northwestern Canada, and the Saint Lawrence River, which drains the Great Lakes into the Gulf of St. Lawrence ending in the Atlantic Ocean. The Mackenzie, including its tributaries is over in length and lies within the second largest drainage basin of North America, while the St. Lawrence in length, drains the world's largest system of freshwater lakes. + +The Atlantic watershed drains the entirety of the Atlantic provinces (parts of the Quebec-Labrador border are fixed at the Atlantic Ocean-Arctic Ocean continental divide), most of inhabited Quebec and large parts of southern Ontario. It is mostly drained by the economically important St. Lawrence River and its tributaries, notably the Saguenay, Manicouagan, and Ottawa rivers. The Great Lakes and Lake Nipigon are also drained by the St. Lawrence. The Churchill River and Saint John River are other important elements of the Atlantic watershed in Canada. + +The Hudson Bay watershed drains over a third of Canada. It covers Manitoba, northern Ontario and Quebec, most of Saskatchewan, southern Alberta, southwestern Nunavut, and the southern half of Baffin Island. This basin is most important in fighting drought in the prairies and producing hydroelectricity, especially in Manitoba, northern Ontario and Quebec. Major elements of this watershed include Lake Winnipeg, Nelson River, the North Saskatchewan and South Saskatchewan Rivers, Assiniboine River, and Nettilling Lake on Baffin Island. Wollaston Lake lies on the boundary between the Hudson Bay and Arctic Ocean watersheds and drains into both. It is the largest lake in the world that naturally drains in two directions. + +The continental divide in the Rockies separates the Pacific watershed in British Columbia and Yukon from the Arctic and Hudson Bay watersheds. This watershed irrigates the agriculturally important areas of inner British Columbia (such as the Okanagan and Kootenay valleys), and is used to produce hydroelectricity. Major elements are the Yukon, Columbia and Fraser rivers. + +The northern parts of Alberta, Manitoba, and British Columbia, most of Northwest Territories and Nunavut, and parts of Yukon are drained by the Arctic watershed. This watershed has been little used for hydroelectricity, with the exception of the Mackenzie River. The Peace, Athabasca and Liard Rivers, as well as Great Bear Lake and Great Slave Lake (respectively the largest and second largest lakes wholly enclosed by Canada) are significant elements of the Arctic watershed. Each of these elements eventually merges with the Mackenzie, thereby draining the vast majority of the Arctic watershed. + +The southernmost part of Alberta drains into the Gulf of Mexico through the Milk River and its tributaries. The Milk River originates in the Rocky Mountains of Montana, then flows into Alberta, then returns into the United States, where it is drained by the Missouri River. A small area of southwestern Saskatchewan is drained by Battle Creek, which empties into the Milk River. + +Natural resources + +Canada's abundance of natural resources is reflected in their continued importance in the economy of Canada. Major resource-based industries are fisheries, forestry, agriculture, petroleum products and mining. + +The fisheries industry has historically been one of Canada's strongest. Unmatched cod stocks on the Grand Banks of Newfoundland launched this industry in the 16th century. Today these stocks are nearly depleted, and their conservation has become a preoccupation of the Atlantic Provinces. On the West Coast, tuna stocks are now restricted. The less depleted (but still greatly diminished) salmon population continues to drive a strong fisheries industry. Canada claims of territorial sea, a contiguous zone of , an exclusive economic zone of with and a continental shelf of or to the edge of the continental margin. + +Five per cent of Canada's land area is arable, none of which is for permanent crops. Three per cent of Canada's land area is covered by permanent pastures. Canada has of irrigated land (1993 estimate). Agricultural regions in Canada include the Canadian Prairies, the Lower Mainland and various regions within the Interior of British Columbia, the St. Lawrence Basin and the Canadian Maritimes. Main crops in Canada include flax, oats, wheat, maize, barley, sugar beets and rye in the prairies; flax and maize in Western Ontario; Oats and potatoes in the Maritimes. Fruit and vegetables are grown primarily in the Annapolis Valley of Nova Scotia, Southwestern Ontario, the Golden Horseshoe region of Ontario, along the south coast of Georgian Bay and in the Okanagan Valley of British Columbia. Cattle and sheep are raised in the valleys and plateaus of British Columbia. Cattle, sheep and hogs are raised on the prairies, cattle and hogs in Western Ontario, sheep and hogs in Quebec, and sheep in the Maritimes. There are significant dairy regions in central Nova Scotia, southern New Brunswick, the St. Lawrence Valley, northeastern Ontario, southwestern Ontario, the Red River valley of Manitoba and the valleys in the British Columbia Interior, on Vancouver Island and in the Lower Mainland. + +Fossil fuels are a more recently developed resource in Canada, with oil and gas being extracted from deposits in the Western Canadian Sedimentary Basin since the mid-1900s. While Canada's crude oil deposits are fewer, technological developments in recent decades have opened up oil production in Alberta's Oil Sands to the point where Canada now has some of the largest reserves of oil in the world. In other forms, Canadian industry has a long history of extracting large coal and natural gas reserves. + +Canada's mineral resources are diverse and extensive. Across the Canadian Shield and in the north there are large iron, nickel, zinc, copper, gold, lead, molybdenum, and uranium reserves. Large diamond concentrations have been recently developed in the Arctic, making Canada one of the world's largest producers. Throughout the Shield there are many mining towns extracting these minerals. The largest, and best known, is Sudbury, Ontario. Sudbury is an exception to the normal process of forming minerals in the Shield since there is significant evidence that the Sudbury Basin is an ancient meteorite impact crater. The nearby, but less known Temagami Magnetic Anomaly has striking similarities to the Sudbury Basin. Its magnetic anomalies are very similar to the Sudbury Basin, and so it could be a second metal-rich impact crater. The Shield is also covered by vast boreal forests that support an important logging industry. + +Canada's many rivers have afforded extensive development of hydroelectric power. Extensively developed in British Columbia, Ontario, Quebec and Labrador, the many dams have long provided a clean, dependable source of energy. + +Environmental issues + +Air pollution and resulting acid rain severely affects lakes and damages forests. Metal smelting, coal-burning utilities, and vehicle emissions impact agricultural and forest productivity. Ocean waters are also becoming contaminated by agricultural, industrial, mining, and forestry activities. + +Global climate change and the warming of the polar region will likely cause significant changes to the environment, including loss of the polar bear, the exploration for resource then the extraction of these resources and an alternative transport route to the Panama Canal through the Northwest Passage. + +Canada is currently warming at twice the global average, and this is effectively irreversible. + +Political geography + +Canada is divided into ten provinces and three territories. According to Statistics Canada, 72.0 percent of the population is concentrated within of the nation's southern border with the United States, 70.0% live south of the 49th parallel, and over 60 percent of the population lives along the Great Lakes and St. Lawrence River between Windsor, Ontario, and Quebec City. This leaves the vast majority of Canada's territory as sparsely populated wilderness; Canada's population density is , among the lowest in the world. Despite this, 79.7 percent of Canada's population resides in urban areas, where population densities are increasing. + +Canada shares with the U.S. the world's longest binational border at ; are with Alaska. The Danish island dependency of Greenland lies to Canada's northeast, separated from the Canadian Arctic islands by Baffin Bay and Davis Strait. As of June 14, 2022, Canada shares a land border with Greenland on Hans Island. The French islands of Saint Pierre and Miquelon lie off the southern coast of Newfoundland in the Gulf of St. Lawrence and have a maritime territorial enclave within Canada's exclusive economic zone. + +Canada's geographic proximity to the United States has historically bound the two countries together in the political world as well. Canada's position between the Soviet Union (now Russia) and the U.S. was strategically important during the Cold War since the route over the North Pole and Canada was the fastest route by air between the two countries and the most direct route for intercontinental ballistic missiles. Since the end of the Cold War, there has been growing speculation that Canada's Arctic maritime claims may become increasingly important if global warming melts the ice enough to open the Northwest Passage. + +See also + + Atlas of Canada + Canadian Geographic + Canadian Rockies + Extreme points of North America + List of highest points of Canadian provinces and territories + National Parks of Canada + List of Ultras of Canada + Mountain peaks of Canada + Temperature in Canada + +References + +Further reading + +External links + + Government of Canada – The Atlas of Canada + Canadian Geographic – The Canadian Atlas Online + Cartography of Canada – The Canadian Map Online + Canada. The World Factbook. Central Intelligence Agency. +Statistics Canada conducts a country-wide census that collects demographic data every five years on the first and sixth year of each decade. The 2021 Canadian census enumerated a total population of 36,991,981, an increase of around 5.2 percent over the 2016 figure, Between 2011 and May 2016, Canada's population grew by 1.7 million people, with immigrants accounting for two-thirds of the increase. Between 1990 and 2008, the population increased by 5.6 million, equivalent to 20.4 percent overall growth. The main driver of population growth is immigration, and to a lesser extent, natural growth. + +Canada has one of the highest per-capita immigration rates in the world, driven mainly by economic policy and, to a lesser extent, family reunification. In 2021, a total of 405,330 immigrants were admitted to Canada, mainly from Asia. New immigrants settle mostly in major urban areas such as Toronto, Montreal, and Vancouver. Canada also accepts large numbers of refugees, accounting for over 10 percent of annual global refugee resettlements. + +Population + +The 2021 Canadian census had a total population count of 36,991,981 individuals, making up approximately 0.5% of the world's total population. A population estimate for 2023 put the total number of people in Canada at 40,097,761. + +Demographic statistics according to the World Population Review in 2022. + +One birth every 1 minutes +One death every 2 minutes +One net migrant every 2 minutes +Net gain of one person every 1 minute +Death rate +8.12 deaths/1,000 population (2022 est.) Country comparison to the world: 81 +Net migration rate +5.46 migrant(s)/1,000 population (2022 est.) Country comparison to the world: 21st +Urbanization +urban population: 81.8% of total population (2022) +rate of urbanization: 0.95% annual rate of change (2020–25 est.) + +Provinces and territories + + + +Population distribution +The vast majority of Canadians are positioned in a discontinuous band within approximately 300 km of the southern border with the United States; the most populated province is Ontario, followed by Quebec and British Columbia. + +Sources: Statistics Canada + +Cities + +Census metropolitan areas + +Fertility rate + +The total fertility rate is the number of children born in a specific year cohort to the total number of women who can give birth in the country. + +In 1971, the birth rate for the first time dipped below replacement and since then has not rebounded. + +Canada’s fertility rate hit a record low of 1.4 children born per woman in 2020, below the population replacement level, which stands at 2.1 births per woman. In 2020, Canada also experienced the country’s lowest number of births in 15 years, also seeing the largest annual drop in childbirths (-3.6%) in a quarter of a century. The total birth rate is 10.17 births/1,000 population in 2022. + +Mother's mean age at first birth +Canada is among late-childbearing countries, with the average age of mothers at the first birth being 31.3 years in 2020. + +Population projection + +According to Organisation for Economic Co-operation and Development (OECD)/World Bank, the population in Canada increased from 1990 to 2008 with 5.6 million and 20.4% growth in population, compared to 21.7% growth in the United States and 31.2% growth in Mexico. According to the OECD/World Bank population statistics, for the same period the world population growth was 27%, a total of 1,423 million people. However, over the same period, the population of France grew by 8.0%. And from 1991 to 2011, the population of the UK increased by 10.0%. + +The current population growth rate for Canada in 2022 was 0.75%. + +Life expectancy +Life expectancy in Canada has consistently risen since the country's formation. + +School life expectancy (primary to tertiary education) +total: 16 years +male: 16 years +female: 17 years (2016) +Infant mortality rate +total: 4.5 deaths/1,000 live births. Country comparison to the world: 180th +male: 4.8 deaths/1,000 live births +female: 4.2 deaths/1,000 live births (2017 est.) + +Age characteristics + +Population by Sex and Age Group (Census 10.V.2016) (To ensure confidentiality, the values, including totals are randomly rounded either up or down to a multiple of '5' or '10.' As a result, when these data are summed or grouped, the total value may not match the individual values since totals and sub-totals are independently rounded. Similarly, percentages, which are calculated on rounded data, may not necessarily add up to 100%.): + +Age structure +0–14 years: 15.99% (male 3,094,008/female 2,931,953) +15–24 years: 11.14% (male 2,167,013/female 2,032,064) +25–54 years: 39.81% (male 7,527,554/female 7,478,737) +55–64 years: 14.08% (male 2,624,474/female 2,682,858) +65 years and over: 18.98% (male 3,274,298/female 3,881,126) (2020 est.) +Median age +total: 41.8 years. Country comparison to the world: 40th +male: 40.6 years +female: 42.9 years (2020 est.) + +total: 40.6 years +male: 39.6 years +female: 41.5 years (2011) + +Median age by province and territory in 2011 + Newfoundland and Labrador: 44.0 + Nova Scotia: 43.7 + New Brunswick:43.7 + Prince Edward Island: 42.8 + Quebec: 41.9 + British Columbia: 41.9 + Ontario: 40.4 + Yukon: 39.1 + Manitoba: 38.4 + Saskatchewan: 38.2 + Alberta: 36.5 + Northwest Territories: 32.3 + Nunavut: 24.1 + +Sex ratio +at birth: 1.05 male(s)/female + +0–14 years: 1.06 male(s)/female + +15–24 years: 1.06 male(s)/female + +25–54 years: 1.01 male(s)/female + +55–64 years: 0.98 male(s)/female + +65 years and over: 0.75 male(s)/female + +total population: 0.98 male(s)/female (2022 est. + +Dependency ratios +total dependency ratio: 47.3 +youth dependency ratio: 23.5 +elderly dependency ratio: 23.8 +potential support ratio: 4.2 (2015 est.) + +Vital statistics + +Current vital statistics + +Employment +Unemployment, youth ages 15–24 +total: 20.2% +male: 20.9% +female: 19.4% (2020 est.) + +Ethnicity and visible minorities + +Canadians as ethnic group by province +All citizens of Canada are classified as "Canadians" as defined by Canada's nationality laws. "Canadian" as an ethnic group has since 1996 been added to census questionnaires for possible ancestral origin or descent. "Canadian" was included as an example on the English questionnaire and "Canadien" as an example on the French questionnaire. "The majority of respondents to this selection are from the eastern part of the country that was first settled. Respondents generally are visibly European (Anglophones and Francophones) and no longer self-identify with their ethnic ancestral origins. This response is attributed to a multitude or generational distance from ancestral lineage. + +Ethnic origin + +According to the 2021 Canadian census, over 450 "ethnic or cultural origins" were self-reported by Canadians. The major panethnic groups chosen were; European (), North American (), Asian (), North American Indigenous (), African (), Latin, Central and South American (), Caribbean (), Oceanian (), and Other (). Statistics Canada reports that 35.5% of the population reported multiple ethnic origins, thus the overall total is greater than 100%. + +The country's ten largest self-reported specific ethnic or cultural origins in 2021 were Canadian (accounting for 15.6 percent of the population), followed by English (14.7 percent), Irish (12.1 percent), Scottish (12.1 percent), French (11.0 percent), German (8.1 percent), Chinese (4.7 percent), Italian (4.3 percent), Indian (3.7 percent), and Ukrainian (3.5 percent). + +Of the 36.3 million people enumerated in 2021 approximately 25.4 million reported being "White", representing 69.8 percent of the population. The indigenous population representing 5 percent or 1.8 million individuals, grew by 9.4 percent compared to the non-Indigenous population, which grew by 5.3 percent from 2016 to 2021. One out of every four Canadians or 26.5 percent of the population belonged to a non-White and non-Indigenous visible minority, the largest of which in 2021 were South Asian (2.6 million people; 7.1 percent), Chinese (1.7 million; 4.7 percent) and Black (1.5 million; 4.3 percent). + +As data is completely self-reported, and reporting individuals may have varying definitions of "Ethnic origin" (or may not know their ethnic origin), these figures should not be considered an exact record of the relative prevalence of different ethno-cultural ancestries but rather how Canadians self-identify. + +Data from this section from Statistics Canada, 2021. + +The most common ethnic origins per province are as follows in 2006 (total responses; only percentages 10% or higher shown; ordered by percentage of "Canadian"): + Quebec (7,723,525): Canadian (59.1%), French (29.1%) + New Brunswick (735,835): Canadian (50.3%), French (27.2%), English (25.9%), Irish (21.6%), Scottish (19.9%) + Newfoundland and Labrador (507,265): Canadian (49.0%), English (43.4%), Irish (21.8%) + Nova Scotia (906,170): Canadian (39.1%), Scottish (31.2%), English (30.8%), Irish (22.3%), French (17.0%), German (10.8%) + Prince Edward Island (137,375): Scottish (39.3%), Canadian (36.8%), English (31.1%), Irish (30.4%), French (21.1%) + Ontario (12,651,795): Canadian (23.3%), English (23.1%), Scottish (16.4%), Irish (16.4%), French (10.8%) + Alberta (3,567,980): English (24.9%), Canadian (21.8%), German (19.2%), Scottish (18.8%), Irish (15.8%), French (11.1%) + Manitoba (1,174,345): English (21.8%), German (18.6%), Canadian (18.5%), Scottish (18.0%), Ukrainian (14.9%), Irish (13.2%), French (12.6%), North American Indian (10.6%) + Saskatchewan (1,008,760): German (28.6%), English (24.9%), Scottish (18.9%), Canadian (18.8%), Irish (15.5%), Ukrainian (13.5%), French (12.2%), North American Indian (12.1%) + British Columbia (4,324,455): English (27.7%), Scottish (19.3%), Canadian (19.1%), German (13.1%), Chinese (10.7%) + Yukon (33,320): English (28.5%), Scottish (25.0%), Irish (22.0%), North American Indian (21.8%), Canadian (21.8%), German (15.6%), French (13.1%) + Northwest Territories (40,800): North American Indian (37.0%), Scottish (13.9%), English (13.7%), Canadian (12.8%), Irish (11.9%), Inuit (11.7%) + Nunavut (31,700): Inuit (85.4%) + +Italics indicates either that this response is dominant within this province, or that this province has the highest ratio (percentage) of this response among provinces. + +Visible minority population + +Note: Indigenous population decline between 1991 and 1996 censuses attributed to change in criteria in census count; "the 1996 Royal Commission on Aboriginal Peoples used a more restrictive definition of Aboriginal". + +Indigenous population + +Note: Other Indigenous and mixed Indigenous groups are not listed as their own, but they are all accounted for in total Indigenous + +Future projections + +Statistics Canada projects that visible minorities will make up between 38.2% and 43.0% of the total Canadian population by 2041, compared with 26.5% in 2021. Among the working-age population (15 to 64 years), meanwhile, visible minorities are projected to represent between 42.1% and 47.3% of Canada's total population, compared to 28.5% in 2021. + +Languages + +Knowledge of language + +The question on knowledge of languages allows for multiple responses, and first appeared on the 1991 Canadian census. The following figures are from the 1991 Canadian census, 2001 Canadian census, 2011 Canadian census, and the 2021 Canadian census. + +Mother tongue + +Work + +Home + +Immigration + +According to the 2021 Canadian census, immigrants in Canada number 8.3 million persons and make up approximately 23 percent of Canada's total population. This represents the eighth-largest immigrant population in the world, while the proportion represents one of the highest ratios for industrialized Western countries. + +Since confederation in 1867 through to the contemporary era, decadal and demi-decadal census reports have detailed immigration statistics. During this period, the highest annual immigration rate in Canada occurred in 1913, when 400,900 new immigrants accounted for 5.3 percent of the total population, while the greatest number of foreign-born individuals admitted to Canada in single year occurred in 2021, with 405,330 new immigrants accounting for 1.1 percent of the total population. + +Statistics Canada projects that immigrants will represent between 29.1% and 34.0% of Canada's population in 2041, compared with 23.0% in 2021, while the Canadian population with at least one foreign born parent (first and second generation persons) could rise to between 49.8% and 54.3%, up from 44.0% in 2021. + +Religion + +In 2021, 53.3% of Canadians were Christians, down from 67.3% in 2011. 29.9% were Catholic while 11.4% were Protestant (all other listed denominations excluding Christian Orthodox, Latter Day Saints and Jehovah's Witnesses). 7.6% were Christian not otherwise specified, 2.1% were "other Christian and Christian-related traditions", 1.7% were Christian Orthodox, 0.4% were Jehovah's Witnesses and 0.2% were Latter Day Saints adherents. + +34.6% of Canadians were non-religious or secular, up from 23.9% in 2011. Of the non-Christian religions listed, 4.9% of Canadians were Muslim (3.2% in 2011), 2.3% were Hindu (1.5% in 2011), 2.1% were Sikh (1.4% in 2011), 1.0% were Buddhist (1.1% in 2011), 0.9% were Jewish (1.0% in 2011), 0.2% were believers of traditional (North American Indigenous) spirituality (same as 2011), and 0.6% were believers of other religions and spiritual traditions (0.4% in 2011). + +See also + + Demographics of North America + 1666 census of New France + 2016 Canadian census + 2021 Canadian census + List of Canadian census areas demographic extremes + Interprovincial migration in Canada + Canada immigration statistics + Cahiers québécois de démographie academic journal + Canadian Studies in Population academic journal + +Notes + +References + +Further reading + + + + + + + Roderic Beaujot and Don Kerr, (2007) The Changing Face of Canada: Essential Readings in Population, Canadian Scholars' Press, . + +External links + + Canada Year Book (2010) – Statistics Canada + Population estimates and projections, 2010 – 2036 – Statistics Canada + Canada's population clock +The politics of Canada function within a framework of parliamentary democracy and a federal system of parliamentary government with strong democratic traditions. Canada is a constitutional monarchy, in which the monarch is head of state. In practice, the executive powers are directed by the Cabinet, a committee of ministers of the Crown responsible to the elected House of Commons of Canada and chosen and headed by the Prime Minister of Canada. + +Canada is described as a "full democracy", with a tradition of liberalism, and an egalitarian, moderate political ideology. Extremism has never been prominent in Canadian politics. The traditional "brokerage" model of Canadian politics leaves little room for ideology. Peace, order, and good government, alongside an Implied Bill of Rights, are founding principles of the Canadian government. An emphasis on social justice has been a distinguishing element of Canada's political culture. Canada has placed emphasis on diversity, equity and inclusiveness for all its people. + +The country has a multi-party system in which many of its legislative practices derive from the unwritten conventions of and precedents set by the Westminster parliament of the United Kingdom. The two dominant political parties in Canada have historically been the current Liberal Party of Canada and the Conservative Party of Canada (as well as its numerous predecessors). Parties like the New Democratic Party, the Quebec nationalist Bloc Québécois and the Green Party of Canada have grown in prominence, exerting their own influence to the political process. + +Canada has evolved variations: party discipline in Canada is stronger than in the United Kingdom, and more parliamentary votes are considered motions of confidence, which tends to diminish the role of non-Cabinet members of parliament (MPs). Such members, in the government caucus, and junior or lower-profile members of opposition caucuses, are known as backbenchers. Backbenchers can, however, exert their influence by sitting in parliamentary committees, like the Public Accounts Committee or the National Defence Committee. + +Context + +Canada's governmental structure was originally established by the British Parliament through the British North America Act, 1867 (now the Constitution Act, 1867), but the federal model and division of powers were devised by Canadian politicians. Particularly after World War I, citizens of the self-governing Dominions, such as Canada, began to develop a strong sense of identity, and, in the Balfour Declaration of 1926, the British government and the governments of the six Dominions jointly agreed that the Dominions had full autonomy within the British Commonwealth. + +In 1931, after further consultations and agreements between the British government and the governments of the Dominions, the British Parliament passed the Statute of Westminster, giving legal recognition to the autonomy of Canada and other Dominions. However, Canadian politicians were unable to obtain consensus on a process for amending the constitution, which was therefore not affected by the Statute of Westminster, meaning amendments to Canada's constitution continued to require the approval of the British parliament until that date. Similarly, the Judicial Committee of the Privy Council in Britain continued to make the final decision on criminal appeals until 1933 and on civil appeals until 1949. It was not until 1982, with the Patriation of the Constitution, that the role of the British Parliament was ended. + +Political culture + +Canada's egalitarian approach to governance has emphasized social welfare, economic freedom, and multiculturalism, which is based on selective economic migrants, social integration, and suppression of far-right politics, that has wide public and political support. Its broad range of constituent nationalities and policies that promote a "just society" are constitutionally protected. Individual rights, equality and inclusiveness (social equality) have risen to the forefront of political and legal importance for most Canadians, as demonstrated through support for the Charter of Rights and Freedoms, a relatively free economy, and social liberal attitudes toward women's rights (like pregnancy termination), homosexuality, euthanasia or cannabis use. There is also a sense of collective responsibility in Canadian political culture, as is demonstrated in general support for universal health care, multiculturalism, evolution, gun control, foreign aid, and other social programs. + +At the federal level, Canada has been dominated by two relatively centrist parties practising brokerage politics", the centre-left leaning Liberal Party of Canada and the centre-right leaning Conservative Party of Canada (or its predecessors). "The traditional brokerage model of Canadian politics leaves little +room for ideology" as the Canadian catch-all party system requires support from a broad spectrum of voters. The historically predominant Liberals position themselves at the centre of the political scale, with the Conservatives sitting on the right and the New Democratic Party occupying the left. Five parties had representatives elected to the federal parliament in the 2021 election: the Liberal Party who currently form the government, the Conservative Party who are the Official Opposition, the New Democratic Party, the Bloc Québécois, and the Green Party of Canada. + +Governmental organization + + Type of government Westminster style federal parliamentary democracy within a constitutional monarchy. + + Administrative divisions Ten provinces and three territories*: Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Northwest Territories*, Nova Scotia, Nunavut*, Ontario, Prince Edward Island, Quebec, Saskatchewan, Yukon*. + + Constitution Westminster system, based on unwritten conventions and written legislation. + + Legal system English common law for all matters within federal jurisdiction and in all provinces and territories except Quebec, which is based on the civil law, based on the Custom of Paris in pre-revolutionary France as set out in the Civil Code of Quebec; accepts compulsory International Court of Justice jurisdiction, with reservations. + + Suffrage Citizens aged 18 years or older. Only two adult citizens in Canada cannot vote: the Chief Electoral Officer, and the Deputy Chief Electoral Officer. The Governor General is eligible to vote, but abstains due to constitutional convention. + +Monarchy + Head of state Charles III, King of Canada (since September 8, 2022). + + Viceroy Mary Simon, Governor General of Canada (since July 26, 2021). + +Executive power + + Head of government Justin Trudeau, Prime Minister of Canada (since November 4, 2015). + + Cabinet Ministers (usually around thirty) chosen by the prime minister and appointed by the governor general to lead various ministries and agencies, generally with regional representation. Traditionally most, if not all, cabinet ministers will be members of the leader's own party in the House of Commons or Senate (see Cabinet of Canada); however this is not legally or constitutionally mandated, and occasionally, the prime minister will appoint a cabinet minister from another party. + + Elections The monarchy is hereditary. The governor general is appointed by the monarch on the advice of the Prime Minister for a non-specific term, though it is traditionally approximately five years. Following legislative elections, the leader of the majority party in the House of Commons is usually designated by the governor general to become Prime Minister. + +Legislative power +The bicameral Parliament of Canada consists of three parts: the monarch, the Senate, and the House of Commons. + +Currently, the Senate, which is frequently described as providing regional representation, has 105 members appointed by the Governor-General on the advice of the Prime Minister to serve until age 75. It was created with equal representation from the three regions of Ontario, Quebec, and the Maritimes (originally New Brunswick and Nova Scotia, expanded in 1873 to include Prince Edward Island). In 1915, a new Western division was created, with six senators from each of the four western provinces, so that each of the four regions had 24 seats in the Senate. When Newfoundland and Labrador joined Confederation in 1949, it was not included in an existing region and was assigned six seats. Each of the three territories has one seat. It is not based on representation-by-population. The normal number of senators can be exceeded by the monarch on the advice of the Prime Minister, as long as the additional senators are distributed equally with regard to region (up to a total of eight additional Senators). This power of additional appointment has only been used once, when Prime Minister Brian Mulroney petitioned Queen Elizabeth II to add eight seats to the Senate so as to ensure the passage of the Goods and Services Tax legislation. + +The House of Commons currently has 338 members elected in single-member districts in a plurality voting system (first past the post), meaning that members must attain only a plurality (the most votes of any candidate) rather than a majority. The electoral districts are also known as ridings. + +Mandates cannot exceed five years; an election must occur by the end of this time. This fixed mandate has been exceeded only once, when Prime Minister Robert Borden perceived the need to do so during World War I. A constitutional amendment was passed, extending the life of the Parliament by one year, by the unanimous consent of the House of Commons. The size of the House and apportionment of seats to each province is revised after every census, conducted every five years, and is based on population changes and approximately on representation-by-population. + +Elections and government formation + +Canadians vote for the election of their local member of parliament (MP) only. A vote is cast directly for a candidate. The candidate in each riding who receives a plurality of votes (first-past-the-post system) is elected. An MP need not be a member of any political party: such MPs are known as independents. When a number of MPs share political opinions they may form a body known as a political party. + +The Canada Elections Act defines a political party as "an organization one of whose fundamental purposes is to participate in public affairs by endorsing one or more of its members as candidates and supporting their election." Forming and registering a federal political party are two different things. There is no legislation regulating the formation of federal political parties. Elections Canada cannot dictate how a federal political party should be formed or how its legal, internal and financial structures should be established. + +Most parties elect their leaders in instant-runoff elections to ensure that the winner receives more than 50% of the votes. Normally the party leader stands as a candidate to be an MP during an election. This happens at leadership conventions. Canada's parliamentary system empowers political parties and their party leaders. Where one party gets a majority of the seats in the House of Commons, that party is said to have a "majority government." Through party discipline, the party leader, who is elected in only one riding, exercises a great deal of control over the cabinet and the parliament. + +Historically, the prime minister and senators are selected by the Governor General as a representative of the King, though in modern practice the monarch's duties are ceremonial. Consequently, the prime minister, while technically selected by the Governor General, is for all practical purposes selected by the party with the majority of seats. That is, the party that gets the most seats normally forms the government, with that party's leader becoming prime minister. The prime minister is not directly elected by the general population, although the prime minister is almost always directly elected as an MP within his or her constituency. + +Often the most popular party in an election takes a majority of the seats, even if it did not receive a majority of the vote. However, as there are usually three or more political parties represented in parliament, often no party takes a majority of the seats. A minority government occurs when the party that holds the most seats in the House of Commons holds fewer seats than the opposition parties combined. In this scenario, the party leader whose party has the most seats in the House is selected by the governor general to lead the government; however, for the government to survive and to pass laws, the leader chosen must have the support of the majority of the House, meaning they need the support of the elected members of at least one other party. This can be done on a case-by-case basis, through a coalition government (which has never been done in Canadian history) or through a confidence-and-supply agreement (such as the one the Liberals and the NDP signed in 2022). + +Federal-provincial relations + +As a federation, the existence and powers of the federal government and the ten provinces are guaranteed by the Constitution. The Constitution Act, 1867 sets out the basic constitutional structure of the federal government and the provinces. The powers of the federal Parliament and the provinces can only be changed by constitutional amendments passed by the federal and provincial governments. The Crown is the formal head of state of the federal government and each of the ten provinces, but rarely has any political role. The governments are led by the representatives of the people: elected by all Canadians, at the federal level, and by the Canadian citizens of each provinces, at the provincial level. + +Federal-provincial (or intergovernmental, formerly Dominion-provincial) relations is a regular issue in Canadian politics: Quebec wishes to preserve and strengthen its distinctive nature, western provinces desire more control over their abundant natural resources, especially energy reserves; industrialized Central Canada is concerned with its manufacturing base, and the Atlantic provinces strive to escape from being less affluent than the rest of the country. + +In order to ensure that social programs such as health care and education are funded consistently throughout Canada, the "have-not" (poorer) provinces receive a proportionately greater share of federal "transfer (equalization) payments" than the richer, or "have", provinces do; this has been somewhat controversial. The richer provinces often favour freezing transfer payments, or rebalancing the system in their favour, based on the claim that they already pay more in taxes than they receive in federal government services, and the poorer provinces often favour an increase on the basis that the amount of money they receive is not sufficient for their existing needs. + +Particularly in the past decade, critics have argued that the federal government's exercise of its unlimited constitutional spending power has contributed to strained federal-provincial relations. This power allows the federal government to influence provincial policies, by offering funding in areas that the federal government cannot itself regulate. The federal spending power is not expressly set out in the Constitution Act, 1867; however, in the words of the Court of Appeal for Ontario the power "can be inferred" from s. 91(1A), "the public debt and property". + +A prime example of an exercise of the spending power is the Canada Health Act, which is a conditional grant of money to the provinces. Regulation of health services is, under the Constitution, a provincial responsibility. However, by making the funding available to the provinces under the Canada Health Act contingent upon delivery of services according to federal standards, the federal government has the ability to influence health care delivery. + +Quebec and Canadian politics +Except for three short-lived transitional or minority governments, prime ministers from Quebec led Canada continuously from 1968 to early 2006. People from Quebec led both Liberal and Progressive Conservative governments in this period. + +Monarchs, governors general, and prime ministers are now expected to be at least functional, if not fluent, in both English and French. In selecting leaders, political parties give preference to candidates who are fluently bilingual. + +By law, three of the nine positions on the Supreme Court of Canada must be held by judges from Quebec. This representation makes sure that at least three judges have sufficient experience with the civil law system to treat cases involving Quebec laws. + +National unity + +Canada has a long and storied history of secessionist movements (see Secessionist movements of Canada). National unity has been a major issue in Canada since the forced union of Upper and Lower Canada in 1840. + +The predominant and lingering issue concerning Canadian national unity has been the ongoing conflict between the French-speaking majority in Quebec and the English-speaking majority in the rest of Canada. Quebec's continued demands for recognition of its "distinct society" through special political status has led to attempts for constitutional reform, most notably with the failed attempts to amend the constitution through the Meech Lake Accord and the Charlottetown Accord (the latter of which was rejected through a national referendum). + +Since the Quiet Revolution, sovereigntist sentiments in Quebec have been variably stoked by the patriation of the Canadian constitution in 1982 (without Quebec's consent) and by the failed attempts at constitutional reform. Two provincial referendums, in 1980 and 1995, rejected proposals for sovereignty with majorities of 60% and 50.6% respectively. Given the narrow federalist victory in 1995, a reference was made by the Chrétien government to the Supreme Court of Canada in 1998 regarding the legality of unilateral provincial secession. The court decided that a unilateral declaration of secession would be unconstitutional. This resulted in the passage of the Clarity Act in 2000. + +The Bloc Québécois, a sovereigntist party which runs candidates exclusively in Quebec, was started by a group of MPs who left the Progressive Conservative (PC) party (along with several disaffected Liberal MPs), and first put forward candidates in the 1993 federal election. With the collapse of the PCs in that election, the Bloc and Liberals were seen as the only two viable parties in Quebec. Thus, prior to the 2006 election, any gain by one party came at the expense of the other, regardless of whether national unity was really at issue. The Bloc, then, benefited (with a significant increase in seat total) from the impressions of corruption that surrounded the Liberal Party in the lead-up to the 2004 election. However, the newly unified Conservative party re-emerged as a viable party in Quebec by winning 10 seats in the 2006 election. In the 2011 election, the New Democratic Party succeeded in winning 59 of Quebec's 75 seats, successfully reducing the number of seats of every other party substantially. The NDP surge nearly destroyed the Bloc, reducing them to 4 seats, far below the minimum requirement of 12 seats for Official party status. + +Newfoundland and Labrador is also a problem regarding national unity. As the Dominion of Newfoundland was a self-governing country equal to Canada until 1949, there are large, though unco-ordinated, feelings of Newfoundland nationalism and anti-Canadian sentiment among much of the population. This is due in part to the perception of chronic federal mismanagement of the fisheries, forced resettlement away from isolated settlements in the 1960s, the government of Quebec still drawing inaccurate political maps whereby they take parts of Labrador, and to the perception that mainland Canadians look down upon Newfoundlanders. In 2004, the Newfoundland and Labrador First Party contested provincial elections and in 2008 in federal ridings within the province. In 2004, then-premier Danny Williams ordered all federal flags removed from government buildings as a result of lost offshore revenues to equalization clawbacks. On December 23, 2004, premier Williams made this statement to reporters in St. John's, + +Western alienation is another national-unity-related concept that enters into Canadian politics. Residents of the four western provinces, particularly Alberta, have often been unhappy with a lack of influence and a perceived lack of understanding when residents of Central Canada consider "national" issues. While this is seen to play itself out through many avenues (media, commerce, and so on.), in politics, it has given rise to a number of political parties whose base constituency is in western Canada. These include the United Farmers of Alberta, who first won federal seats in 1917, the Progressives (1921), the Social Credit Party (1935), the Co-operative Commonwealth Federation (1935), the Reconstruction Party (1935), New Democracy (1940) and most recently the Reform Party (1989). + +The Reform Party's slogan "The West Wants In" was echoed by commentators when, after a successful merger with the PCs, the successor party to both parties, the Conservative Party won the 2006 election. Led by Stephen Harper, who is an MP from Alberta, the electoral victory was said to have made "The West IS In" a reality. However, regardless of specific electoral successes or failures, the concept of western alienation continues to be important in Canadian politics, particularly on a provincial level, where opposing the federal government is a common tactic for provincial politicians. For example, in 2001, a group of prominent Albertans produced the Alberta Agenda, urging Alberta to take steps to make full use of its constitutional powers, much as Quebec has done. + +Political conditions + +Canada is considered by most sources to be a very stable democracy. In 2006, The Economist ranked Canada the third-most democratic nation in its Democracy Index, ahead of all other nations in the Americas and ahead of every nation more populous than itself. In 2008, Canada was ranked World No. 11 and again ahead of all countries more populous and ahead of other states in the Americas. + +More recently, with the existence of strong third parties and first-past-the-post elections amongst other factors, Canada on a federal and provincial level has experienced huge swings in seat shares, where third parties (eg NDP, Reform) end up (usually briefly) replacing the Liberals, the Progressive Conservatives or the Conservatives as the main opposition or even the government and leaving them as a rump. Such examples federally include the 1993 federal election with the collapse of the Progressive Conservatives, and the 2011 election leaving the Liberal Party a (temporary) rump along with Bloc Québécois. Other examples include the changes of fortune for the Alberta NDP during the province's 2015 and 2019 elections, and possibly the 2018 Quebec elections with the rise of Coalition Avenir Québec taking government from the Liberals and Parti Québécois. + +On a provincial level, in the legislatures of western provinces the NDP often is the left-leaning main party instead of that province's Liberal Party branch, the latter generally being a rump or smaller than the NDP. The other main party (right of the NDP) is either the Progressive Conservatives or their successor, or the Saskatchewan Party in Saskatchewan. + +Party systems +According to recent scholars, there have been four party systems in [Canada] at the federal level since Confederation, each with its own distinctive pattern of social support, patronage relationships, leadership styles, and electoral strategies. Political scientists disagree on the names and precise boundaries of the eras, however. Steve Patten identifies four party systems in Canada's political history + +Clarkson (2005) shows how the Liberal Party has dominated all the party systems, using different approaches. It began with a "clientelistic approach" under Laurier, which evolved into a "brokerage" system of the 1920s, 1930s and 1940s under Mackenzie King. The 1950s saw the emergence of a "pan-Canadian system", which lasted until the 1990s. The 1993 election — categorized by Clarkson as an electoral "earthquake" which "fragmented" the party system, saw the emergence of regional politics within a four party-system, whereby various groups championed regional issues and concerns. Clarkson concludes that the inherent bias built into the first-past-the-post system, has chiefly benefited the Liberals. + +Party funding +The rules governing the funding of parties are designed to ensure reliance on personal contributions. Personal donations to federal parties and campaigns benefit from tax credits, although the amount of tax relief depends on the amount given. Also only people paying income taxes receive any benefit from this. + +The rules are based on the belief that union or business funding should not be allowed to have as much impact on federal election funding as these are not contributions from citizens and are not evenly spread out between parties. The new rules stated that a party had to receive 2% of the vote nationwide in order to receive the general federal funding for parties. Each vote garnered a certain dollar amount for a party (approximately $1.75) in future funding. For the initial disbursement, approximations were made based on previous elections. The NDP received more votes than expected (its national share of the vote went up) while the new Conservative Party of Canada received fewer votes than had been estimated and was asked to refund the difference. Quebec was the first province to implement a similar system of funding many years before the changes to funding of federal parties. + +Federal funds are disbursed quarterly to parties, beginning at the start of 2005. For the moment, this disbursement delay leaves the NDP and the Green Party in a better position to fight an election, since they rely more on individual contributors than federal funds. The Green Party now receives federal funds, since it for the first time received a sufficient share of the vote in the 2004 election. + +In 2007, news emerged of a funding loophole that "could cumulatively exceed the legal limit by more than $60,000", through anonymous recurrent donations of $200 to every riding of a party from corporations or unions. At the time, for each individual, the legal annual donation limit was $1,100 for each party, $1,100 combined total for each party's associations, and in an election year, an additional $1,100 combined total for each party's candidates. All three limits increase on 1 April every year based on the inflation rate. + +Two of the biggest federal political parties in Canada experienced a drop in donations in 2020, in light of the COVID-19 pandemic impact on the global economy. + +Political parties, leaders and status +Ordered by number of elected representatives in the House of Commons +Liberal Party: Justin Trudeau, Prime Minister of Canada +Conservative Party: Pierre Poilievre, Leader of the Official Opposition +Bloc Québécois: Yves-François Blanchet +New Democratic Party: Jagmeet Singh +Green Party: Elizabeth May + +Leaders' debates + +Leaders' debates in Canada consist of two debates, one English and one French, both produced by a consortium of Canada's five major television broadcasters (CBC/SRC, CTV, Global and TVA) and usually consist of the leaders of all parties with representation in the House of Commons. + +These debates air on the networks of the producing consortium as well as the public affairs and parliamentary channel CPAC and the American public affairs network C-SPAN. + +Judiciary + +The highest court in Canada is the Supreme Court of Canada and is the final court of appeal in the Canadian justice system. The court is composed of nine judges: eight Puisne Justices and the Chief Justice of Canada. Justices of the Supreme Court of Canada are appointed by the Governor-in-Council. The Supreme Court Act limits eligibility for appointment to persons who have been judges of a superior court, or members of the bar for ten or more years. Members of the bar or superior judge of Quebec, by law, must hold three of the nine positions on the Supreme Court of Canada. + +Government departments and structure +The Canadian government operates the public service using departments, smaller agencies (for example, commissions, tribunals, and boards), and crown corporations. There are two types of departments: central agencies such as Finance, Privy Council Office, and Treasury Board Secretariat have an organizing and oversight role for the entire public service; line departments are departments that perform tasks in a specific area or field, such as the departments of Agriculture, Environment, or Defence. + +Significant departments include Finance, Revenue, Human Resources and Skills Development, National Defence, Public Safety and Emergency Preparedness, and Foreign Affairs/International Trade. + +Scholar Peter Aucoin, writing about the Canadian Westminster system, raised concerns in the early 2000s about the centralization of power; an increased number, role and influence of partisan-political staff; personal-politicization of appointments to the senior public service; and the assumption that the public service is promiscuously partisan for the government of the day. + +Immigration +In 1967, Canada established a point-based system to determine if immigrants should be eligible to enter the country, using meritorious qualities such as the applicant's ability to speak both French and English, their level of education, and other details that may be expected of someone raised in Canada. This system was considered ground-breaking at the time since prior systems were slanted on the basis of ethnicity. However, many foreign nationals still found it challenging to secure work after emigrating, resulting in a higher unemployment rate amongst the immigrant population. After winning power at the 2006 federal election, the Conservative Party sought to curb this issue by placing weight on whether or not the applicant has a standing job offer in Canada. The change has been a source of some contention as opponents argue that businesses use this change to suppress wages, with corporate owners leveraging the knowledge that an immigrant should hold a job to successfully complete the immigration process. + +Elections + + Elections + + House of Commons: direct plurality representation (last election held October 21, 2019) + Senate: appointed by the Governor General on the advice of the prime minister + Election results + +See also + + Conservatism in Canada + Constitutional debate in Canada + Fair Vote Canada + Federal political financing in Canada + Liberalism in Canada + List of Canadian federal electoral districts + List of Canadian federal general elections + List of Canadian political scandals + List of political parties in Canada + Populism in Canada + Republicanism in Canada + Socialism in Canada + +Notes + +References + +Further reading + + Argyle, Ray. Turning Points: The Campaigns That Changed Canada - 2011 and Before (2011) 440pp excerpt and text search ch. 1 + + + + + + + Hyde, Anthony (1997). Promises, Promises: Breaking Faith in Canadian Politics. Toronto: Viking. viii, 218 p. + + + + + Pammett, Jon H., and Christopher Dornan, eds. The Canadian Federal Election of 2011 (2011) excerpt and text search; 386pp; essays by experts + + + + + Political thought + Katherine Fierlbeck, Political Thought in Canada: An Intellectual History, Broadview Press, 2006 + Ian McKay, Rebels, Reds, Radicals: Rethinking Canada's Left History, Between the Lines, 2006 + +External links + + Canada Newsnet (formerly PoliWonk) - Extensive Canadian Politics news and resources + Canadian-Politics.com Comprehensive overview of politics in Canada + CBC Digital Archives – Scandals, Boondoggles and White Elephants + CBC Digital Archives – Campaigning for Canada + Canadian Governments Compared + Canadian Politics Online Digital Textbook + + +Political history of Canada +Westminster system +The economy of Canada is a highly developed mixed economy, with the world's tenth-largest economy , and a nominal GDP of approximately . Canada is one of the world's largest trading nations, with a highly globalized economy. In 2021, Canadian trade in goods and services reached $2.016 trillion. Canada's exports totalled over $637 billion, while its imported goods were worth over $631 billion, of which approximately $391 billion originated from the United States. In 2018, Canada had a trade deficit in goods of $22 billion and a trade deficit in services of $25 billion. The Toronto Stock Exchange is the tenth-largest stock exchange in the world by market capitalization, listing over 1,500 companies with a combined market capitalization of over . + +Canada has a strong cooperative banking sector, with the world's highest per-capita membership in credit unions. It ranks low in the Corruption Perceptions Index (14th in 2023) and "is widely regarded as among the least corrupt countries of the world". It ranks high in the Global Competitiveness Report (14th in 2019) and Global Innovation Indexes (15th in 2022). Canada's economy ranks above most Western nations on The Heritage Foundation's Index of Economic Freedom and experiences a relatively low level of income disparity. The country's average household disposable income per capita is "well above" the OECD average. Canada ranks among the lowest of the most developed countries for housing affordability and foreign direct investment. + +Since the early 20th century, the growth of Canada's manufacturing, mining, and service sectors has transformed the nation from a largely rural economy to an urbanized, industrial one. Like many other developed countries, the Canadian economy is dominated by the service industry, which employs about three-quarters of the country's workforce. Among developed countries, Canada has an unusually important primary sector, of which the forestry and petroleum industries are the most prominent components. Many towns in northern Canada, where agriculture is difficult, are sustained by nearby mines or sources of timber. + +Canada's economic integration with the United States has increased significantly since World War II. The Automotive Products Trade Agreement of 1965 opened Canada's borders to trade in the automobile manufacturing industry. In the 1970s, concerns over energy self-sufficiency and foreign ownership in the manufacturing sectors prompted the federal government to enact the National Energy Program (NEP) and the Foreign Investment Review Agency (FIRA). The government abolished the NEP in the 1980s and changed the name of FIRA to Investment Canada to encourage foreign investment. The Canada – United States Free Trade Agreement (FTA) of 1988 eliminated tariffs between the two countries, while the North American Free Trade Agreement (NAFTA) expanded the free-trade zone to include Mexico in 1994 (later replaced by the Canada–United States–Mexico Agreement). As of 2023, Canada is a signatory to 15 free trade agreements with 51 different countries. + +Canada is one of the few developed nations that are net exporters of energy. Atlantic Canada possess vast offshore deposits of natural gas, and Alberta hosts the fourth-largest oil reserves in the world. The vast Athabasca oil sands and other oil reserves give Canada 13 percent of global oil reserves, constituting the world's third or fourth-largest. Canada is additionally one of the world's largest suppliers of agricultural products; the Canadian Prairies are one of the most important global producers of wheat, canola, and other grains. The country is a leading exporter of zinc, uranium, gold, nickel, platinoids, aluminum, steel, iron ore, coking coal, lead, copper, molybdenum, cobalt, and cadmium. Canada has a sizeable manufacturing sector centred in southern Ontario and Quebec, with automobiles and aeronautics representing particularly important industries. The fishing industry is also a key contributor to the economy. + +Overview + +With the exception of a few island nations in the Caribbean, Canada is the only major North American country to use the parliamentary system of government. As a result, Canada has developed its own social and political institutions, distinct from most other countries in the world. Though the Canadian economy is closely integrated with the American economy, it has developed unique economic institutions. + +The Canadian economic system generally combines elements of private enterprise and public enterprise. Many aspects of public enterprise, most notably the development of an extensive social welfare system to redress social and economic inequities, were adopted after the end of World War II in 1945. + +Approximately 89% of Canada's land is Crown land. Canada has one of the highest levels of economic freedom in the world. Today Canada closely resembles the U.S. in its market-oriented economic system and pattern of production. As of 2019, Canada has 56 companies in the Forbes Global 2000 list, ranking ninth just behind South Korea and ahead of Saudi Arabia. +International trade makes up a large part of the Canadian economy, particularly of its natural resources. In 2009, agriculture, energy, forestry and mining exports accounted for about 58% of Canada's total exports. Machinery, equipment, automotive products and other manufactures accounted for a further 38% of exports in 2009. In 2009, exports accounted for about 30% of Canada's GDP. The United States is by far its largest trading partner, accounting for about 73% of exports and 63% of imports as of 2009. Canada's combined exports and imports ranked 8th among all nations in 2006. + +About 4% of Canadians are directly employed in primary resource fields, and they account for 6.2% of GDP. They are still paramount in many parts of the country. Many, if not most, towns in northern Canada, where agriculture is difficult, exist because of a nearby mine or source of timber. Canada is a world leader in the production of many natural resources such as gold, nickel, uranium, diamonds, lead, and in recent years, crude petroleum, which, with the world's second-largest oil reserves, is taking an increasingly prominent position in natural resources extraction. Several of Canada's largest companies are based in natural resource industries, such as Encana, Cameco, Goldcorp, and Barrick Gold. The vast majority of these products are exported, mainly to the United States. There are also many secondary and service industries that are directly linked to primary ones. For instance one of Canada's largest manufacturing industries is the pulp and paper sector, which is directly linked to the logging business. + +The reliance on natural resources has several effects on the Canadian economy and Canadian society. While manufacturing and service industries are easy to standardize, natural resources vary greatly by region. This ensures that differing economic structures developed in each region of Canada, contributing to Canada's strong regionalism. At the same time the vast majority of these resources are exported, integrating Canada closely into the international economy. Howlett and Ramesh argue that the inherent instability of such industries also contributes to greater government intervention in the economy, to reduce the social impact of market changes. + +Natural resource industries also raise important questions of sustainability. Despite many decades as a leading producer, there is little risk of depletion. Large discoveries continue to be made, such as the massive nickel find at Voisey's Bay. Moreover, the far north remains largely undeveloped as producers await higher prices or new technologies as many operations in this region are not yet cost effective. In recent decades Canadians have become less willing to accept the environmental destruction associated with exploiting natural resources. High wages and Aboriginal land claims have also curbed expansion. Instead, many Canadian companies have focused their exploration, exploitation and expansion activities overseas where prices are lower and governments more amenable. Canadian companies are increasingly playing important roles in Latin America, Southeast Asia, and Africa. + +The depletion of renewable resources has raised concerns in recent years. After decades of escalating overutilization the cod fishery all but collapsed in the 1990s, and the Pacific salmon industry also suffered greatly. The logging industry, after many years of activism, has in recent years moved to a more sustainable model, or to other countries. + +Measuring productivity +Productivity measures are key indicators of economic performance and a key source of economic growth and competitiveness. OECD's Compendium of Productivity Indicators, published annually, presents a broad overview of productivity levels and growth in member nations, highlighting key measurement issues. It analyses the role of "productivity as the main driver of economic growth and convergence" and the "contributions of labour, capital and MFP in driving economic growth". According to the definition above "MFP is often interpreted as the contribution to economic growth made by factors such as technical and organisational innovation". Measures of productivity include the gross domestic product (GDP) and total factor productivity. + +Multifactor productivity + +Another productivity measure, used by OECD, is the long-term trend in multifactor productivity (MFP) also known as total factor productivity (TFP). This indicator assesses an economy's "underlying productive capacity ('potential output'), itself an important measure of the growth possibilities of economies and of inflationary pressures". MFP measures the residual growth that cannot be explained by the rate of change in the services of labour, capital and intermediate outputs, and is often interpreted as the contribution to economic growth made by factors such as technical and organisational innovation. + +According to OECD's annual economic survey of Canada in June 2012, Canada has experienced weak growth of multi-factor productivity (MFP) and has been declining further since 2002. One of the ways MFP growth is raised is by boosting innovation and Canada's innovation indicators such as business R&D and patenting rates were poor. Raising MFP growth is "needed to sustain rising living standards, especially as the population ages". + +Since 2010 productivity growth has picked up, almost entirely driven by above average multifactor productivity growth. However, productivity on the whole still lags behind the upper half of OECD countries such as the United States. Canada's productivity is now around the median OECD productivity, close to that of Australia. More can be done to increase productivity, such as increasing the productivity of capital through improving the capital stock to output ratio and capital quality. This could be achieved through the liberalization of internal trade barriers, as suggested in the OECD's latest Canadian economic survey. + +Bank of Canada +The mandate of the central bank—the Bank of Canada is to conduct monetary policy that "preserves the value of money by keeping inflation low and stable". + +Monetary Policy Report +The Bank of Canada issues its bank rate announcement through its Monetary Policy Report which is released eight times a year. The Bank of Canada, a federal crown corporation, has the responsibility of Canada's monetary system. Under the inflation-targeting monetary policy that has been the cornerstone of Canada's monetary and fiscal policy since the early 1990s, the Bank of Canada sets an inflation target The inflation target was set at 2 per cent, which is the midpoint of an inflation range of 1 to 3 per cent. They established a set of inflation-reduction targets to keep inflation "low, stable and predictable" and to foster "confidence in the value of money", contribute to Canada's sustained growth, employment gains and improved standard of living. + +In a January 9, 2019 statement on the release of the Monetary Policy Report, Bank of Canada Governor Stephen S. Poloz summarized major events since the October report, such as "negative economic consequences" of the US-led trade war with China. In response to the ongoing trade war "bond yields have fallen, yield curves have flattened even more and stock markets have repriced significantly" in "global financial markets". In Canada, low oil prices will impact Canada's "macroeconomic outlook". Canada's housing sector is not stabilizing as quickly as anticipated. + +Inflation targeting +During the period that John Crow was Governor of the Bank of Canada—1987 to 1994— there was a worldwide recession and the bank rate rose to around 14% and unemployment topped 11%. Although since that time inflation-targeting has been adopted by "most advanced-world central banks", in 1991 it was innovative and Canada was an early adopter when the then-Finance Minister Michael Wilson approved the Bank of Canada's first inflation-targeting in the 1991 federal budget. The inflation target was set at 2 per cent. Inflation is measured by the total consumer price index (CPI). In 2011 the Government of Canada and the Bank of Canada extended Canada's inflation-control target to December 31, 2016. The Bank of Canada uses three unconventional instruments to achieve the inflation target: "a conditional statement on the future path of the policy rate", quantitative easing, and credit easing. + +As a result, interest rates and inflation eventually came down along with the value of the Canadian dollar. From 1991 to 2011 the inflation-targeting regime kept "price gains fairly reliable". + +Following the Financial crisis of 2007–08 the narrow focus of inflation-targeting as a means of providing stable growth in the Canadian economy was questioned. By 2011, the then-Bank of Canada Governor Mark Carney argued that the central bank's mandate would allow for a more flexible inflation-targeting in specific situations where he would consider taking longer "than the typical six to eight quarters to return inflation to 2 per cent". + +On July 15, 2015, the Bank of Canada announced that it was lowering its target for the overnight rate by another one-quarter percentage point, to 0.5 per cent "to try to stimulate an economy that appears to have failed to rebound meaningfully from the oil shock woes that dragged it into decline in the first quarter". According to the Bank of Canada announcement, in the first quarter of 2015, the total Consumer price index (CPI) inflation was about 1 per cent. This reflects "year-over-year price declines for consumer energy products". Core inflation in the first quarter of 2015 was about 2 per cent with an underlying trend in inflation at about 1.5 to 1.7 per cent. + +In response to the Bank of Canada's July 15, 2015 rate adjustment, Prime Minister Stephen Harper explained that the economy was "being dragged down by forces beyond Canadian borders such as global oil prices, the European debt crisis, and China's economic slowdown" which has made the global economy "fragile". + +The Chinese stock market had lost about US$3 trillion of wealth by July 2015 when panicked investors sold stocks, which created declines in the commodities markets, which in turn negatively impacted resource-producing countries like Canada. + +The Bank's main priority has been to keep inflation at a moderate level. As part of that strategy, interest rates were kept at a low level for almost seven years. Since September 2010, the key interest rate (overnight rate) was 0.5%. In mid 2017, inflation remained below the Bank's 2% target, (at 1.6%) mostly because of reductions in the cost of energy, food and automobiles; as well, the economy was in a continuing spurt with a predicted GDP growth of 2.8 percent by year end. Early on July 12, 2017, the bank issued a statement that the benchmark rate would be increased to 0.75%. + +Following the COVID-19 pandemic, critics have pointed out that the Bank of Canada’s inflation-targeting has had unintended consequences, such as fuelling an increase in home prices and contributing to wealth inequalities by supporting higher equity values. + +Key industries + +In 2020, the Canadian economy had the following relative weighting by the industry as a percentage value of GDP: + +Service sector +The service sector in Canada is vast and multifaceted, employing about three quarters of Canadians and accounting for 70% of GDP. The largest employer is the retail sector, employing almost 12% of Canadians. The retail industry is concentrated mainly in a small number of chain stores clustered together in shopping malls. In recent years, there has been an increase in the number of big-box stores, such as Wal-Mart (of the United States), Real Canadian Superstore, and Best Buy (of the United States). This has led to fewer workers in this sector and the migration of retail jobs to the suburbs. + +The second-largest portion of the service sector is the business service, and it employs only a slightly smaller percentage of the population. This includes the financial services, real estate, and communications industries. This portion of the economy has been rapidly growing in recent years. It is largely concentrated in the major urban centres, especially Toronto, Montreal and Vancouver (see Banking in Canada). + +The education and health sectors are two of Canada's largest, but both are primarily under the influence of the government. The health care industry has been quickly growing and is the third-largest in Canada. Its rapid growth has led to problems for governments who must find money to fund it. + +Canada has an important high tech industry, and a burgeoning film, television, and entertainment industry creating content for local and international consumption (see Media in Canada). Tourism is of ever increasing importance, with the vast majority of international visitors coming from the United States. Casino gaming is currently the fastest-growing component of the Canadian tourism industry, contributing $5 billion in profits for Canadian governments and employing 41,000 Canadians as of 2001. + +Manufacturing + +The general pattern of development for wealthy nations was a transition from a raw material production-based economy to a manufacturing-based economy and then to a service-based economy. At its World War II peak in 1944, Canada's manufacturing sector accounted for 29% of GDP, declining to 10.37% in 2017. Canada has not suffered as greatly as most other rich, industrialized nations from the pains of the relative decline in the importance of manufacturing since the 1960s. A 2009 study by Statistics Canada also found that, while manufacturing declined as a relative percentage of GDP from 24.3% in the 1960s to 15.6% in 2005, manufacturing volumes between 1961 and 2005 kept pace with the overall growth in the volume index of GDP. Manufacturing in Canada was especially hit hard by the financial crisis of 2007–08. As of 2017, manufacturing accounts for 10% of Canada's GDP, a relative decline of more than 5% of GDP since 2005. + +Central Canada is home to branch plants to all the major American and Japanese automobile makers and many parts factories owned by Canadian firms such as Magna International and Linamar Corporation. + +Steel + +Canada was the world's nineteenth-largest steel exporter in 2018. In year-to-date 2019 (through March), further referred to as YTD 2019, Canada exported 1.39 million metric tons of steel, a 22 percent decrease from 1.79 million metric tons in YTD 2018. Based on available data, Canada's exports represented about 1.5 percent of all steel exported globally in 2017. By volume, Canada's 2018 steel exports represented just over one-tenth the volume of the world's largest exporter, China. In value terms, steel represented 1.4 percent of the total goods Canada exported in 2018. The growth in exports in the decade since 2009 has been 29%. The largest producers in 2018 were ArcelorMittal, Essar Steel Algoma, and the first of those alone accounted for roughly half of Canadian steel production through its two subsidiaries. The top two markets for Canada's exports were its NAFTA partners, and by themselves accounted for 92 percent of exports by volume. Canada sent 83 percent of its steel exports to the United States in YTD 2019. The gap between domestic demand and domestic production increased to −2.4 million metric tons, up from −0.2 million metric tons in YTD 2018. In YTD 2019, exports as a share of production decreased to 41.6 percent from 53 percent in YTD 2018. + +In 2017, heavy industry accounted for 10.2% of Canada's Greenhouse gas emissions. + +Mining + +Canada is one of the largest producers of metals (as of 2019): + +In 2019, the country was also the 4th largest world producer of sulfur; the world's 7th largest producer of molybdenum; the 7th worldwide producer of cobalt; the 8th largest world producer of lithium; the 8th largest world producer of zinc; the 13th largest world producer of gypsum; the 14th worldwide producer of antimony; the world's 10th largest producer of graphite; in addition to being the 6th largest world producer of salt. It was the 2nd largest producer in the world of uranium in 2018. + +Energy + +Canada has access to cheap sources of energy because of its geography. This has enabled the creation of several important industries, such as the large aluminum industries in British Columbia and Quebec. Canada is also one of the world's highest per capita consumers of energy. + +Electricity + +The electricity sector in Canada has played a significant role in the economic and political life of the country since the late 19th century. The sector is organized along provincial and territorial lines. In a majority of provinces, large government-owned integrated public utilities play a leading role in the generation, transmission and distribution of electricity. Ontario and Alberta have created electricity markets in the last decade in order to increase investment and competition in this sector of the economy. In 2017, the electricity sector accounted for 10% of total national greenhouse gas emissions. Canada has substantial electricity trade with the neighbouring United States amounting to 72 TWh exports and 10 TWh imports in 2017. + +Hydroelectricity accounted for 59% of all electric generation in Canada in 2016, making Canada the world's second-largest producer of hydroelectricity after China. Since 1960, large hydroelectric projects, especially in Quebec, British Columbia, Manitoba and Newfoundland and Labrador, have significantly increased the country's generation capacity. + +The second-largest single source of power (15% of the total) is nuclear power, with several plants in Ontario generating more than half of that province's electricity and one generator in New Brunswick. This makes Canada the world's sixth-largest electricity producer generated by nuclear power, producing 95 TWh in 2017. + +Fossil fuels provide 19% of Canadian electric power, about half as coal (9% of the total), and the remainder a mix of natural gas and oil. Only five provinces use coal for electricity generation. Alberta, Saskatchewan, and Nova Scotia rely on coal for nearly half of their generation, while other provinces and territories use little or none. Alberta and Saskatchewan also use a substantial amount of natural gas. Remote communities, including all of Nunavut and much of the Northwest Territories, produce most of their electricity from diesel generators at high economic and environmental costs. The federal government has set up initiatives to reduce dependence on diesel-fired electricity. + +Non-hydro renewables are a fast-growing portion of the total, at 7% in 2016. + +Oil and gas + +Canada possesses extensive oil and gas resources centered in Alberta, and the Northern Territories but is also present in neighboring British Columbia and Saskatchewan. The vast Athabasca oil sands give Canada the world's third-largest reserves of oil after Saudi Arabia and Venezuela, according to USGS. The oil and gas industry represents 27% of Canada's total greenhouse gas emissions, an increase of 84% since 1990, mostly due to the development of the oil sands. + +Historically, an important issue in Canadian politics is the interplay between the oil and energy industry in Western Canada and the industrial heartland of Southern Ontario. Foreign investment in Western oil projects has fueled Canada's rising dollar. This has raised the price of Ontario's manufacturing exports and made them less competitive, a problem similar to the decline of the manufacturing sector in the Netherlands. + +The National Energy Policy of the early 1980s attempted to make Canada oil-sufficient and to ensure equal supply and price of oil in all parts of Canada, especially for the eastern manufacturing base. This policy proved deeply divisive as it forced Alberta to sell low-priced oil to eastern Canada. The policy was eliminated 5 years after it was first announced amid a collapse of oil prices in 1985. The new Prime Minister Brian Mulroney had campaigned against the policy in the 1984 Canadian federal election. One of the most controversial sections of the Canada–United States Free Trade Agreement of 1988 was a promise that Canada would never charge the United States more for energy than fellow Canadians. + +Agriculture + +Canada is also one of the world's largest suppliers of agricultural products, particularly wheat and other grains. Canada is a major exporter of agricultural products, to the United States and Asia. As with all other developed nations, the proportion of the population and GDP devoted to agriculture fell dramatically over the 20th century. The agriculture and agri-food manufacturing sector created $49.0 billion to Canada's GDP in 2015, accounting for 2.6% of total GDP. This sector also accounts for 8.4% of Canada's Greenhouse gas emissions. + +The Canadian agriculture industry receives significant government subsidies and support as with other developed nations. However, Canada has strongly supported reducing market influencing subsidies through the World Trade Organization. In 2000, Canada spent approximately CDN$4.6 billion on support for the industry. $2.32 billion was classified under the WTO designation of "green box" license, meaning it did not directly influence the market, such as money for research or disaster relief. All but $848.2 million were subsidies worth less than 5% of the value of the crops they were provided for. + +Free-trade agreements + +Free-trade agreements in force + +Source: + Canada–Israel Free Trade Agreement (Entered into force January 1, 1997, modernization ongoing) + Canada–Chile Free Trade Agreement (Entered into force July 5, 1997) + Canada–Costa Rica Free Trade Agreement (Entered into force November 1, 2002, modernization ongoing) + Canada–European Free Trade Association Free Trade Agreement (Iceland, Norway, Switzerland and Liechtenstein; entered into force July 1, 2009) + Canada–Peru Free Trade Agreement (Entered into force August 1, 2009) + Canada–Colombia Free Trade Agreement (Signed November 21, 2008, entered into force August 15, 2011; Canada's ratification of this FTA had been dependent upon Colombia's ratification of the "Agreement Concerning Annual Reports on Human Rights and Free Trade Between Canada and the Republic of Colombia" signed on May 27, 2010) + Canada–Jordan Free Trade Agreement (Signed on June 28, 2009, entered into force October 1, 2012) + Canada–Panama Free Trade Agreement (Signed on May 14, 2010, entered into force April 1, 2013) + Canada–South Korea Free Trade Agreement (Signed on March 11, 2014, entered into force January 1, 2015) + Canada–Ukraine Free Trade Agreement (Signed 11 July 2016, entered into force August 1, 2017) + Comprehensive Economic and Trade Agreement with EU (signed 30 October 2016, entered into force 21 September 2017) + Comprehensive and Progressive Agreement for Trans-Pacific Partnership (signed March 8, 2018, entered into force December 30, 2018) + Canada-United States-Mexico Agreement (signed November 30, 2018, entered into force July 1, 2020) + Canada–UK Trade Continuity Agreement (signed 9 December 2020, entered into force 1 April 2021) + +Free-trade agreements no longer in force +Source: + Canada–U.S. Free Trade Agreement (signed October 12, 1987, entered into force January 1, 1989, later superseded by NAFTA) + Trans-Pacific Partnership (concluded October 5, 2015, superseded by CPTPP) + North American Free Trade Agreement (entered into force January 1, 1994, later superseded by CUSMA) + +Ongoing free-trade agreements negotiations +Source: +Canada is negotiating bilateral FTAs with the following countries respectively trade blocs: +Caribbean Community (CARICOM) +Guatemala, Nicaragua and El Salvador +Dominican Republic +India +Japan +Morocco +Singapore +Andean Community (FTA's are already in force with Peru and Colombia) + +Canada has been involved in negotiations to create the following regional trade blocks: + +Canada and Central American Free Trade Agreement +Free Trade Area of the Americas (FTAA) + +Political issues + +Canada–United States trade relations + +Canada and the United States share a common trading relationship. Canada's job market continues to perform well along with the US, reaching a 30-year low in the unemployment rate in December 2006, following 14 consecutive years of employment growth. + +The United States is by far Canada's largest trading partner, with more than $1.7 billion CAD in trade per day in 2005. In 2009, 73% of Canada's exports went to the United States, and 63% of Canada's imports were from the United States. Trade with Canada makes up 23% of the United States' exports and 17% of its imports. By comparison, in 2005 this was more than U.S. trade with all countries in the European Union combined, and well over twice U.S. trade with all the countries of Latin America combined. Just the two-way trade that crosses the Ambassador Bridge between Michigan and Ontario equals all U.S. exports to Japan. Canada's importance to the United States is not just a border-state phenomenon: Canada is the leading export market for 35 of 50 U.S. states, and is the United States' largest foreign supplier of energy. + +Bilateral trade increased by 52% between 1989, when the U.S.–Canada Free Trade Agreement (FTA) went into effect, and 1994, when the North American Free Trade Agreement (NAFTA) superseded it. Trade has since increased by 40%. NAFTA continues the FTA's moves toward reducing trade barriers and establishing agreed-upon trade rules. It also resolves some long-standing bilateral irritants and liberalizes rules in several areas, including agriculture, services, energy, financial services, investment, and government procurement. NAFTA forms the largest trading area in the world, embracing the 405 million people of the three North American countries. + +The largest component of U.S.–Canada trade is in the commodity sector. + +The U.S. is Canada's largest agricultural export market, taking well over half of all Canadian food exports. Nearly two-thirds of Canada's forest products, including pulp and paper, are exported to the United States; 72% of Canada's total newsprint production also is exported to the U.S. + +At $73.6 billion in 2004, U.S.-Canada trade in energy is the largest U.S. energy trading relationship, with the overwhelming majority ($66.7 billion) being exports from Canada. The primary components of U.S. energy trade with Canada are petroleum, natural gas, and electricity. Canada is the United States' largest oil supplier and the fifth-largest energy producing country in the world. Canada provides about 16% of U.S. oil imports and 14% of total U.S. consumption of natural gas. The United States and Canada's national electricity grids are linked, and both countries share hydropower facilities on the western borders. + +While most of U.S.-Canada trade flows smoothly, there are occasionally bilateral trade disputes, particularly in the agricultural and cultural fields. Usually these issues are resolved through bilateral consultative forums or referral to World Trade Organization (WTO) or NAFTA dispute resolution. In May 1999, the U.S. and Canadian governments negotiated an agreement on magazines that provides increased access for the U.S. publishing industry to the Canadian market. The United States and Canada also have resolved several major issues involving fisheries. By common agreement, the two countries submitted a Gulf of Maine boundary dispute to the International Court of Justice in 1981; both accepted the court's October 12, 1984 ruling which demarcated the territorial sea boundary. A current issue between the United States and Canada is the ongoing softwood lumber dispute, as the U.S. alleges that Canada unfairly subsidizes its forestry industry. + +In 1990, the United States and Canada signed a bilateral Fisheries Enforcement Agreement, which has served to deter illegal fishing activity and reduce the risk of injury during fisheries enforcement incidents. The U.S. and Canada signed a Pacific Salmon Agreement in June 1999 that settled differences over implementation of the 1985 Pacific Salmon Treaty for the next decade. + +Canada and the United States signed an aviation agreement during Bill Clinton's visit to Canada in February 1995, and air traffic between the two countries has increased dramatically as a result. The two countries also share in operation of the St. Lawrence Seaway, connecting the Great Lakes to the Atlantic Ocean. + +The U.S. remains Canada's largest foreign investor and the most popular destination for Canadian foreign investments. In 2018, the stock of U.S. direct investment in Canada totaled $406 billion, while the stock of Canadian investment in the U.S. totaled $595 billion, or 46% of the overall CDIA stock for 2018. This made Canada the second largest investing country in the U.S. for 2018 US investments are primarily directed at Canada's mining and smelting industries, petroleum, chemicals, the manufacture of machinery and transportation equipment, and finance, while Canadian investment in the United States is concentrated in manufacturing, wholesale trade, real estate, petroleum, finance, insurance and other services. + +Debt + +Canadian government debt +Canadian government debt, also called Canada's public debt, is the liabilities of the government sector. For 2019 (the fiscal year ending 31 March 2020), total financial liabilities or gross debt was $2434 billion for the consolidated Canadian general government (federal, provincial, territorial, and local governments combined). This corresponds to 105.3% as a ratio of GDP (GDP was $2311 billion). Of the $2434 billion, $1146 billion or 47% was federal (central) government liabilities (49.6% as a ratio of GDP). Provincial government liabilities comprise most of the remaining liabilities. + +Household debt +Household debt, the amount of money that all adults in the household owe financial institutions, includes consumer debt and mortgage loans. In March 2015, the International Monetary Fund reported that Canada's high household debt was one of two vulnerable domestic areas in Canada's economy; the second is its overheated housing market. + +According to Statistics Canada, total household credit as of July 2019 was CAD$2.2 trillion. According to Philip Cross of the Fraser Institute, in May 2015, while the Canadian household debt-to-income ratio is similar to that in the US, however lending standards in Canada are tighter than those in the United States to protect against high-risk borrowers taking out unsustainable debt. + +Mergers and acquisitions + +Since 1985, 63,755 deals in- and outbound Canada have been announced, with an overall value of US$3.7 billion. Almost 50% of the targets of Canadian companies (outbound deals) have a parent company in the US. Inbound deals are 82% percent from the US. + +Here is a list of the biggest deals in Canadian history: + +Raw data +The following table shows the main economic indicators in 1980–2021 (with IMF staff estimates for 2022–2027). Inflation below 5% is in green. + +Unemployment rate + +Export trade + +Export trade from Canada measured in US dollars. In 2021, Canada exported US$503.4 billion. + +That dollar amount reflects a 19.5% gain since 2017 and a 29.1% increase from 2020 to 2021. + +Import trade +Import trade in 2017 measured in US dollars. + +See also + +Canada's Global Markets Action Plan +Comparison of Canadian and American economies +Economy of Alberta +Economy of Ontario +Economy of Quebec +Economy of Saskatchewan +History of the petroleum industry in Canada +List of Median household income of cities in Canada +List of Commonwealth of Nations countries by GDP +List of Canadian provinces and territories by gross domestic product + +Notes + +References + +Further reading + + Howlett, Michael and M. Ramesh. Political Economy of Canada: An Introduction. Toronto: McClelland and Stewart, 1992. + Wallace, Iain, A Geography of the Canadian Economy. Don Mills: Oxford University Press, 2002. + +External links + +Statistics Canada +Department of Finance Canada +Bank of Canada +Canada – OECD +Canada profile at the CIA World Factbook +Canada profile at The World Bank +Canada Exports and Imports + + +Canada +Canada +Present-day telecommunications in Canada include telephone, radio, television, and internet usage. In the past, telecommunications included telegraphy available through Canadian Pacific and Canadian National. + +History + +The history of telegraphy in Canada dates back to the Province of Canada. While the first telegraph company was the Toronto, Hamilton and Niagara Electro-Magnetic Telegraph Company, founded in 1846, it was the Montreal Telegraph Company, controlled by Hugh Allan and founded a year later, that dominated in Canada during the technology's early years. + +Following the 1852 Telegraph Act, Canada's first permanent transatlantic telegraph link was a submarine cable built in 1866 between Ireland and Newfoundland. Telegrams were sent through networks built by Canadian Pacific and Canadian National. + +In 1868 Montreal Telegraph began facing competition from the newly established Dominion Telegraph Company. 1880 saw the Great North Western Telegraph Company established to connect Ontario and Manitoba but within a year it was taken over by Western Union, leading briefly to that company's control of almost all telegraphy in Canada. In 1882, Canadian Pacific transmitted its first commercial telegram over telegraph lines they had erected alongside its tracks, breaking Western Union's monopoly. Great North Western Telegraph, facing bankruptcy, was taken over in 1915 by Canadian Northern. + +By the end of World War II, Canadians communicated by telephone, more than any other country. In 1967 the CP and CN networks were merged to form CNCP Telecommunications. + +As of 1951, approximately 7000 messages were sent daily from the United States to Canada. An agreement with Western Union required that U.S. company to route messages in a specified ratio of 3:1, with three telegraphic messages transmitted to Canadian National for every message transmitted to Canadian Pacific. The agreement was complicated by the fact that some Canadian destinations were served by only one of the two networks. + +Fixed-line telephony + +Telephones - fixed lines: total subscriptions: 13.926 million (2020) + Subscriptions per 100 inhabitants: 36.9 (2020 est.) + +Telephones - mobile cellular: 36,093,021 (2020) + Subscriptions per 100 inhabitants: 95.63 (2020 est.) + +Telephone system: (2019) + Domestic: Nearly 37 per 100 fixed-line and 96 per 100 mobile-cellular teledensity; domestic satellite system with about 300 earth stations (2020) + International: country code - +1; submarine cables provide links within the Americas and Europe; satellite earth stations - 7 (5 Intelsat - 4 trans-Atlantic Ocean and 1 trans-Pacific Ocean, and 2 Intersputnik - (Atlantic Ocean region) + +Call signs + +ITU prefixes: Letter combinations available for use in Canada as the first two letters of a television or radio station's call sign are CF, CG, CH, CI, CJ, CK, CY, CZ, VA, VB, VC, VD, VE, VF, VG, VO, VX, VY, XJ, XK, XL, XM, XN and XO. Only CF, CH, CI, CJ and CK are currently in common use, although four radio stations in St. John's, Newfoundland and Labrador retained call letters beginning with VO when Newfoundland joined Canadian Confederation in 1949. Stations owned by the Canadian Broadcasting Corporation use CB through a special agreement with the government of Chile. Some codes beginning with VE and VF are also in use to identify radio repeater transmitters. + +Radio + +As of 2016, there were over 1,100 radio stations and audio services broadcasting in Canada. Of these, 711 are private commercial radio stations. These commercial stations account for over three quarters of radio stations in Canada. The remainder of the radio stations are a mix of public broadcasters, such as CBC Radio, as well as campus, community, and Aboriginal stations. + +Television + +As of 2018, 762 TV services were broadcasting in Canada. This includes both conventional television stations and discretionary services. + +Cable and satellite television services are available throughout Canada. The largest cable providers are Bell Canada, Rogers Cable, Shaw Cable, Vidéotron, Telus and Cogeco, while the two licensed satellite providers are Bell Satellite TV and Shaw Direct. + +Internet + +Bell, Rogers, Telus, and Shaw are among the bigger ISPs in Canada. Depending on your location, Bell and Rogers would be the big internet service providers in Eastern provinces, while Shaw and Telus are the main players competing in western provinces. + +Internet service providers: there are more than 44 ISPs in Canada, including Beanfield, Bell Canada, Cable Axion, Cablevision (Canada), Chebucto Community Net, Cogeco, Colbanet, Craig Wireless, Dery Telecom, Eastlink (company), Electronic Box, Everus Communications, Guest-tek, Information Gateway Services, Internet Access Solutions, Internex Online, Inukshuk Wireless, Jet2.net, Look Communications, Managed Network Systems, Inc., Mountain Cablevision, National Capital FreeNet, Novus Entertainment, Ontera, Persona Communications, Primus Canada, Project Chapleau, Qiniq, Rally Internet, Rogers Hi-Speed Internet, Rose Media, Rush Communications Ltd., SaskTel, Seaside Communications, Shaw Communications, Source Cable, SSI Micro, TAO (collective), TekSavvy, Telus, Telus Internet, Vidéotron, Vmedia, Web Community Resource Networks, Wireless Nomad, YourLink + Internet Exchange Points: There are multiple Internet Exchange Points in Canada, the largest of which are in Calgary, Montreal, Toronto and Vancouver. Most ISP's peer at one or more of these Exchanges, except for Bell Canada. The Toronto Internet Exchange ranks as one of the largest internet exchanges in the world. +Country codes: .CA, CDN, 124 +Internet users: 33 million users +Internet hosts: 8.7 million (2012-2017) +Percentage of households with Internet access: 87(2016) +Total households with high speed connection: 67% (2014) +Total users of home online banking: 68% (2016) + +Mobile networks + +The three major mobile network operators are Rogers Wireless (10.4 million subscribers), Bell Mobility (9.8 million) and Telus Mobility (9.5 million), which have a combined 86% of market share. + +Administration and Government +Federally, telecommunications are overseen by the Canadian Radio-television and Telecommunications Commission ()–CRTC as outlined under the provisions of both the Telecommunications Act and Radiocommunication Acts. CRTC further works with Innovation, Science and Economic Development Canada (formerly Industry Canada) on various technical aspects including: allocating frequencies and call signs, managing the broadcast spectrum, and regulating other technical issues such as interference with electronics equipment. As Canada comprises a part of the North American Numbering Plan for area codes, the Canadian Numbering Administration Consortium within Canada is responsible for allocating and managing area codes in Canada. + +See also + + Media in Canada + List of newspapers in Canada + List of mobile network operators of the Americas + List of telephone operating companies + List of area codes in Canada + List of postcode areas in Canada + Canadian Association of Broadcasters + Canadian Broadcast Standards Council + Canadian Broadcasting Corporation + Canadian Communications Foundation + +References + +Further reading + +Bibliography + + Canada’s internet infrastructure Internet Exchange Points (IXPs), Canadian Internet Registration Authority (CIRA) + Canadian Area Codes, Canadian Numbering Administration Consortium, Inc. (CNAC) + Canada, SubmarineCableMap.com + National Broadband Internet Service Availability Map, Innovation, Science and Economic Development Canada + +External links +The Canadian Communications Foundation – A History of Canadian Broadcasting +Find Service Providers in Canada, CRTC (Mobile, Phone, Internet, or free/paid TV) by location +Compare Internet & Phone Plans in Canada – Free Online Comparison Tool +Canada, the world's second-largest country in total area, is dedicated to having an efficient, high-capacity multimodal transportation spanning often vast distances between natural resource extraction sites, agricultural and urban areas. Canada's transportation system includes more than of roads, 10 major international airports, 300 smaller airports, of functioning railway track, and more than 300 commercial ports and harbours that provide access to the Pacific, Atlantic and Arctic oceans as well as the Great Lakes and the St. Lawrence Seaway. In 2005, the transportation sector made up 4.2% of Canada's GDP, compared to 3.7% for Canada's mining and oil and gas extraction industries. + +Transport Canada oversees and regulates most aspects of transportation within federal jurisdiction, including interprovincial transport. This primarily includes rail, air and maritime transportation. Transport Canada is under the direction of the federal government's Minister of Transport. The Transportation Safety Board of Canada is responsible for maintaining transportation safety in Canada by investigating accidents and making safety recommendations. + +History +The standard history covers the French regime, fur traders, the canals, and early roads, and gives extensive attention to the railways. + +European contact +Prior to the arrival of European settlers, Aboriginal peoples in Canada walked. They also used canoes, kayaks, umiaks and Bull Boats, in addition to the snowshoe, toboggan and sled in winter. They had no wheeled vehicles, and no animals larger than dogs. + +Europeans adopted canoes as they pushed deeper into the continent's interior, and were thus able to travel via the waterways that fed from the St. Lawrence River and Hudson Bay. + +In the 19th century and early 20th century transportation relied on harnessing oxen to Red River ox carts or horse to wagon. Maritime transportation was via manual labour such as canoe or wind on sail. Water or land travel speeds was approximately . + +Settlement was along river routes. Agricultural commodities were perishable, and trade centres were within . Rural areas centred around villages, and they were approximately apart. The advent of steam railways and steamships connected resources and markets of vast distances in the late 19th century. Railways also connected city centres, in such a way that the traveller went by sleeper, railway hotel, to the cities. Crossing the country by train took four or five days, as it still does by car. People generally lived within of the downtown core thus the train could be used for inter-city travel and the tram for commuting. + +The advent of the interstate or Trans-Canada Highway in Canada in 1963 established ribbon development, truck stops, and industrial corridors along throughways. + +Evolution + +The Federal Department of Transport (established November 2, 1936) supervised railways, canals, harbours, marine and shipping, civil aviation, radio and meteorology. The Transportation Act of 1938 and the amended Railway Act, placed control and regulation of carriers in the hands of the Board of Transport commissioners for Canada. The Royal Commission on Transportation was formed December 29, 1948, to examine transportation services to all areas of Canada to eliminate economic or geographic disadvantages. The commission also reviewed the Railway Act to provide uniform yet competitive freight-rates. + +Roads + +There is a total of of roads in Canada, of which are paved, including of expressways (the third-longest collection in the world, behind the Interstate Highway System of the United States and China's National Trunk Highway System). As of 2008, were unpaved. + +In 2009, there were 20,706,616 road vehicles registered in Canada, of which 96% were vehicles under , 2.4% were vehicles between and 1.6% were or greater. These vehicles travelled a total of 333.29 billion kilometres, of which 303.6 billion was for vehicles under 4.5 tonnes, 8.3 billion was for vehicles between 4.5 and 15 tonnes and 21.4 billion was for vehicles over 15 tonnes. For the 4.5- to 15-tonne trucks, 88.9% of vehicle-kilometres were intra-province trips, 4.9% were inter-province, 2.8% were between Canada and the US and 3.4% made outside of Canada. For the trucks over 15 tonnes, 59.1% of vehicle-kilometres were intra-province trips, 20% inter-province trips, 13.8% Canada-US trips and 7.1% trips made outside of Canada. + +Canada's vehicles consumed a total of of gasoline and of diesel. Trucking generated 35% of the total GDP from transport, compared to 25% for rail, water and air combined (the remainder being generated by the industry's transit, pipeline, scenic and support activities). Hence roads are the dominant means of passenger and freight transport in Canada. + +Roads and highways were managed by provincial and municipal authorities until construction of the Northwest Highway System (the Alaska Highway) and the Trans-Canada Highway project initiation. The Alaska Highway of 1942 was constructed during World War II for military purposes connecting Fort St. John, British Columbia with Fairbanks, Alaska. The transcontinental highway, a joint national and provincial expenditure, was begun in 1949 under the initiation of the Trans Canada Highway Act on December 10, 1949. The highway was completed in 1962 at a total expenditure of $1.4 billion. + +Internationally, Canada has road links with both the lower 48 US states and Alaska. The Ministry of Transportation maintains the road network in Ontario and also employs Ministry of Transport Enforcement Officers for the purpose of administering the Canada Transportation Act and related regulations. The Department of Transportation in New Brunswick performs a similar task in that province as well. + +Regulations enacted in regards to Canada highways are the 1971 Motor Vehicle Safety Act and the 1990 Highway Traffic Act. + +The safety of Canada's roads is moderately good by international standards, and is improving both in terms of accidents per head of population and per billion vehicle kilometers. + +Air transport + +Air transportation made up 9% of the transport sector's GDP generation in 2005. Canada's largest air carrier and its flag carrier is Air Canada, which had 34 million customers in 2006 and, as of April 2010, operates 363 aircraft (including Air Canada Jazz). CHC Helicopter, the largest commercial helicopter operator in the world, is second with 142 aircraft and WestJet, a low-cost carrier formed in 1996, is third with 100 aircraft. Canada's airline industry saw significant change following the signing of the US-Canada open skies agreement in 1995, when the marketplace became less regulated and more competitive. + +The Canadian Transportation Agency employs transportation enforcement officers to maintain aircraft safety standards, and conduct periodic aircraft inspections, of all air carriers. The Canadian Air Transport Security Authority is charged with the responsibility for the security of air traffic within Canada. In 1994 the National Airports Policy was enacted + +Principal airports + +Of over 1,800 registered Canadian aerodromes, certified airports, heliports, and floatplane bases, 26 are specially designated under Canada's National Airports System (NAS): these include all airports that handle 200,000 or more passengers each year, as well as the principal airport serving each federal, provincial, and territorial capital. However, since the introduction of the policy only one, Iqaluit Airport, has been added and no airports have been removed despite dropping below 200,000 passengers. The Government of Canada, with the exception of the three territorial capitals, retains ownership of these airports and leases them to local authorities. The next tier consists of 64 regional/local airports formerly owned by the federal government, most of which have now been transferred to other owners (most often to municipalities). + +Below is a table of Canada's ten biggest airports by passenger traffic in 2019. + +Railways + +In 2007, Canada had a total of of freight and passenger railway, of which is electrified. While intercity passenger transportation by rail is now very limited, freight transport by rail remains common. Total revenues of rail services in 2006 was $10.4 billion, of which only 2.8% was from passenger services. In a year are usually earned about $11 billion, of which 3.2% is from passengers and the rest from freight. The Canadian National Railway and Canadian Pacific Kansas City are Canada's two major freight railway companies, each having operations throughout North America. In 2007, 357 billion tonne-kilometres of freight were transported by rail, and 4.33 million passengers travelled 1.44 billion passenger-kilometres (an almost negligible amount compared to the 491 billion passenger-kilometres made in light road vehicles). 34,281 people were employed by the rail industry in the same year. + +Nationwide passenger services are provided by the federal crown corporation Via Rail. Three Canadian cities have commuter rail services: in the Montreal area by Exo, in the Toronto area by GO Transit, and in the Vancouver area by West Coast Express. Smaller railways such as Ontario Northland, Rocky Mountaineer, and Algoma Central also run passenger trains to remote rural areas. + +In Canada railways are served by standard gauge, , rails. See also track gauge in Canada. + +Canada has railway links with the lower 48 US States, but no connection with Alaska, although a line has been proposed. There are no other international rail connections. + +Waterways + +In 2005, of cargo was loaded and unloaded at Canadian ports. The Port of Vancouver is the busiest port in Canada, moving or 15% of Canada's total in domestic and international shipping in 2003. + +Transport Canada oversees most of the regulatory functions related to marine registration, safety of large vessel, and port pilotage duties. Many of Canada's port facilities are in the process of being divested from federal responsibility to other agencies or municipalities. + +Inland waterways comprise , including the St. Lawrence Seaway. Transport Canada enforces acts and regulations governing water transportation and safety. + +Ferry services + +Passenger ferry service +Vancouver Island and surrounding islands and peninsulas to the British Columbia mainland +Several Sunshine Coast communities to the British Columbia mainland and to Alaska +Internationally to St. Pierre and Miquelon +Automobile ferry service +Nova Scotia to Newfoundland and Labrador +Quebec to Newfoundland across the Strait of Belle Isle +Labrador to Newfoundland +Chandler to the Magdalen Islands, Quebec +Prince Edward Island to the Magdalen Islands, Quebec +Prince Edward Island to Nova Scotia +Digby, Nova Scotia, to Saint John, New Brunswick + +Canals + +The main route canals of Canada are those of the St. Lawrence River and the Great Lakes. The others are subsidiary canals. + St. Lawrence Seaway + Welland Canal + Soo Locks + Trent-Severn Waterway + Rideau Canal + +Ports and harbours + +The National Harbours Board administered Halifax, Saint John, Chicoutimi, Trois-Rivières, Churchill, and Vancouver until 1983. At one time, over 300 harbours across Canada were supervised by the Department of Transport. A program of divestiture was implemented around the turn of the millennium, and as of 2014, 493 of the 549 sites identified for divestiture in 1995 have been sold or otherwise transferred, as indicated by a DoT list. The government maintains an active divestiture programme, and after divestiture Transport Canada oversees only 17 Canada Port Authorities for the 17 largest shipping ports. + +Pacific coast +Victoria, British Columbia +Vancouver, British Columbia +Prince Rupert, British Columbia + +Atlantic coast +Halifax, Nova Scotia +Saint John, New Brunswick +St. John's, Newfoundland and Labrador +Sept-Îles, Quebec +Sydney, Nova Scotia +Botwood, Newfoundland and Labrador + +Arctic coast +Churchill, Manitoba + +Great Lakes and St Lawrence River +Bécancour, Quebec +Hamilton, Ontario +Montreal, Quebec +Quebec City, Quebec +Trois-Rivières, Quebec +Thunder Bay, Ontario +Toronto, Ontario +Windsor, Ontario + +Merchant marine + +Canada's merchant marine comprised a total of 173 ships ( or over) or at the end of 2007. + +Pipelines + +Pipelines are part of the energy extraction and transportation network of Canada and are used to transport natural gas, natural gas liquids, crude oil, synthetic crude and other petroleum based products. Canada has of pipeline for transportation of crude and refined oil, and for liquefied petroleum gas. + +Public transit + +Most Canadian cities have public transport, if only a bus system. Three Canadian cities have rapid transit systems, four have light rail systems, and three have commuter rail systems (see below). In 2016, 12.4% of Canadians used public transportation to get to work. This compares to 79.5% that got to work using a car (67.4% driving alone, 12.1% as part of a carpool), 5.5% that walked and 1.4% that rode a bike. + +Government organizations across Canada owned 17,852 buses of various types in 2016. Organizations in Ontario (38.8%) and Quebec (21.9%) accounted for just over three-fifths of the country's total bus fleet. Urban municipalities owned more than 85% of all buses. + +in 2016, diesel buses were the leading bus type in Canada (65.9%), followed by bio-diesel (18.1%) and hybrid (9.4%) buses. Electric, natural gas and other buses collectively accounted for the remaining 6.6%. + +Rapid transit systems + +There are three rapid transit systems operating in Canada: the Montreal Metro, the Toronto subway, and the Vancouver SkyTrain. + +There is also an airport circulator, the Link Train, at Toronto Pearson International Airport. It operates 24 hours a day, 7 days a week and is wheelchair-accessible. It is free of cost. + +Light rail systems + +There are light rail systems in four cities – the Calgary CTrain, the Edmonton LRT, the Ottawa O-Train, and Waterloo Region's Ion – while Toronto has an extensive streetcar system. + +The 2016 Canada's Core Public Infrastructure Survey from Statistics Canada found that all of Canada's 247 streetcars were owned by the City of Toronto. The vast majority (87.9%) of these streetcars were purchased from 1970 to 1999, while 12.1% were purchased in 2016. Reflecting the age of the streetcars, 88.0% were reported to be in very poor condition, while 12.0% were reported to be in good condition. + +Commuter train systems +Commuter trains serve the cities and surrounding areas of Montreal, Toronto and Vancouver: + +See also + + Royal Commission on Railways +The Romance of Transportation in Canada, a National Film Board of Canada animated short + Taxicabs of Canada + Plug-in electric vehicles in Canada + +References + +Further reading + Brown, Ron. Rails Across the Prairies: The Railway Heritage of Canada's Prairie Provinces (Dundurn, 2012) + Currie, Archibald William. Economics of Canadian transportation (U of Toronto Press, 1954.) + Daniels, Rudolph L. Trains across the continent: North American railroad history (Indiana University Press, 2000) + Glazebrook, G.P. de T. A history of transportation in Canada (1938; reprinted 1969), The standard scholarly history + McCalla, Robert J. Water Transportation in Canada (1994) + McIlwraith, Thomas F. "Transportation in Old Ontario." American Review of Canadian Studies 14.2 (1984): 177–192. + Pigott, Peter. Canada: The History (2014); Pigott has numerous books on aviation in Canada + Schreiner, John. Transportation: The evolution of Canada's networks (McGraw-Hill Ryerson, 1972) + Stagg, Ronald. The Golden Dream: A History of the St. Lawrence Seaway (Dundurn, 2010) + Willoughby, William R. The St. Lawrence waterway: a study in politics and diplomacy (University of Wisconsin Press, 1961) + +External links + Directory of Canada Transportation Companies www.transportationindustry.ca +"Transportation and Maps" in Virtual Vault, an online exhibition of Canadian historical art at Library and Archives Canada + North American transportation statistics +Relations between Canada and the United States are extraordinarily positive and extensive. The two countries consider themselves among the "closest [of] allies". + +Both countries are culturally a part of the Anglosphere and compose a part of the broader Western World. Starting with the American Revolution, when Loyalists were resettled in Canada, a vocal element in Canada has warned against American dominance or annexation. The War of 1812 saw invasions across the border in both directions, but the war ended with unchanged borders. The border was demilitarized, as was the Great Lakes region. The British ceased aiding Native American attacks on the United States, and the United States never again attempted to invade Canada. Apart from minor unsuccessful raids, it has remained peaceful. As Britain decided to disengage, fears of an American takeover played a role in the Canadian Confederation (1867), and Canada's rejection of free trade (1911). Military collaboration was close during World War II and continued throughout the Cold War, bilaterally through NORAD and multilaterally through NATO. A high volume of trade and migration continues between the two nations, as well as a heavy overlapping of popular and elite culture; a dynamic that has generated closer ties, especially after the signing of the Canada–United States Free Trade Agreement in 1988 and the North American Free Trade Agreement in 1994. + +Canada and the United States share the longest border () between any two nations in the world, and also have significant military interoperability. Recent difficulties have included repeated trade disputes, environmental concerns, Canadian concern for the future of oil exports, the issue of illegal immigration and the threat of terrorism. Trade has continued to expand, especially following the 1988 FTA, the 1994 North American Free Trade Agreement (NAFTA), and the 2020 United States–Mexico–Canada Agreement (USMCA), which has progressively merged the two economies. Co-operation on many fronts, such as the ease of the flow of goods, services, and people across borders are to be even more extended, as well as the establishment of joint border inspection agencies, relocation of U.S. food inspectors agents to Canadian plants and vice versa, greater sharing of intelligence, and harmonizing regulations on everything from food to manufactured goods, thus further increasing the American-Canadian assemblage. + +Both Americans and Canadians have generally ranked each other as one of their respective "favorite nations". + +History + +Colonial wars + +Before the British conquest of French Canada in 1760, there had been a series of wars between the British and the French that were fought out in the colonies as well as in Europe and the high seas. In general, the British heavily relied on American colonial militia units, while the French heavily relied on their First Nation allies. The Iroquois Nation were important allies of the British. Much of the fighting involved ambushes and small-scale warfare in the villages along the border between New England and Quebec. The New England colonies had a much larger population than Quebec, so major invasions came from south to north. The First Nation allies, only loosely controlled by the French, repeatedly raided New England villages to kidnap women and children, and torture and kill the men. Those who survived were brought up as Francophone Catholics. The tension along the border was exacerbated by religion, the French Catholics and English Protestants had a deep mutual distrust. There was a naval dimension as well, involving privateers attacking enemy merchant ships. + +England seized Quebec from 1629 to 1632, and Acadia in 1613 and again from 1654 to 1670; These territories were returned to France by the peace treaties. The major wars were (to use American names), King William's War (1689–1697); Queen Anne's War (1702–1713); King George's War (1744–1748), and the French and Indian War (1755–1763). In Canada, as in Europe, this era is known as the Seven Years' War. + +New England soldiers and sailors were critical to the successful British campaign to capture the French fortress of Louisbourg in 1745, and (after it had been returned by treaty) to capture it again in 1758. + +American Revolutionary War + +At the outset of the American Revolutionary War, the American revolutionaries hoped the French Canadians in Quebec and the Colonists in Nova Scotia would join their rebellion and they were pre-approved for joining the United States in the Articles of Confederation. +When northeastern Quebec was invaded, thousands joined the American cause and formed regiments that fought during the war; however most remained neutral and some joined the British effort. Britain advised the French Canadians that the British Empire already enshrined their rights in the Quebec Act, which the American colonies had viewed as one of the Intolerable Acts. The American invasion was a fiasco and Britain tightened its grip on its northern possessions; in 1777, a major British invasion into New York led to the surrender of the entire British army at Saratoga and led France to enter the war as an ally of the U.S. The French Canadians largely ignored France's appeals for solidarity. + +The American forces had much better success in southwestern Quebec, owing to the leadership of Virginia militia leader George Rogers Clark. In 1778, 200 men under Clark, supplied and supported mainly by Virginia, came down the Ohio River near Louisville, Kentucky, marched across southern Illinois, and then captured Kaskaskia without loss of life. From there, part of his men took Vincennes, but was soon lost to British Lieutenant Colonel Henry Hamilton, the commander at Fort Detroit. It was later retaken by Clark in the Siege of Fort Vincennes in February 1779. Roughly half of Clark's militia in the theater were Canadien volunteers sympathetic to the American cause. + +In the end, America won its independence and the Treaty of Paris compelled Britain to cede parts of southwestern Canada to them. Following America's independence, Canada became a refuge for about an estimated 70,000 or 15% of Loyalists who either wanted to leave the U.S. or were compelled by Patriot reprisals to do so. Among the original Loyalists, there were 3,500 free African Americans. Most went to Nova Scotia and in 1792, 1,200 migrated to Sierra Leone. About 2,000 black slaves were brought in by Loyalist owners; they remained slaves in Canada until the Empire abolished slavery in 1833. Around 85% of the loyalists remained in the new United States and became American citizens. + +War of 1812 + +The Treaty of Paris, which ended the war, called for British forces to vacate all their forts south of the Great Lakes border. Britain refused to do so, citing failure of the United States to provide financial restitution for Loyalists who had lost property in the war. The Jay Treaty in 1795 with Great Britain resolved that lingering issue and the British departed the forts. Thomas Jefferson saw the nearby British presence as a threat to the United States, and so he opposed the Jay Treaty, and it became one of the major political issues in the United States at the time. Thousands of Americans immigrated to Upper Canada (Ontario) from 1785 to 1812 to obtain cheaper land and better tax rates prevalent in that province; despite expectations that they would be loyal to the U.S. if a war broke out, in the event they were largely non-political. + +Tensions mounted again after 1805, erupting into the War of 1812, when the United States declared war on Britain. The Americans were angered by British harassment of U.S. ships on the high seas and seizure of 6,000 sailors from American ships, severe restrictions against neutral American trade with France, and British support for hostile Native American tribes in Ohio and territories the U.S. had gained in 1783. American "honor" was an implicit issue. While the Americans could not hope to defeat the Royal Navy and control the seas, they could call on an army much larger than the British garrison in Canada, and so a land invasion of Canada was proposed as the most advantageous means of attacking the British Empire. Americans on the western frontier also hoped an invasion would bring an end to British support of Native American resistance to American expansion, typified by Tecumseh's coalition of tribes. Americans may also have wanted to acquire Canada. + +Once war broke out, the American strategy was to seize Canada. There was some hope that settlers in western Canada—most of them recent immigrants from the U.S.—would welcome the chance to overthrow their British rulers. However, the American invasions were defeated primarily by British regulars with support from Native Americans and Upper Canada militia. Aided by the large Royal Navy, a series of British raids on the American coast were highly successful, culminating with an attack on Washington that resulted in the British burning of the White House, the Capitol, and other public buildings. At the end of the war, Britain's American Indian allies had largely been defeated, and the Americans controlled a strip of Western Ontario centered on Fort Malden. However, Britain held much of Maine, and, with the support of their remaining American Indian allies, huge areas of the Old Northwest, including Wisconsin and much of Michigan and Illinois. With the surrender of Napoleon in 1814, Britain ended naval policies that angered Americans; with the defeat of the Indian tribes, the threat to American expansion was ended. The upshot was both the United States and Canada asserted their sovereignty, Canada remained under British rule, and London and Washington had nothing more to fight over. The war was ended by the Treaty of Ghent, which took effect in February 1815. A series of postwar agreements further stabilized peaceful relations along the Canada–US border. Canada reduced American immigration for fear of undue American influence, and built up the Anglican Church of Canada as a counterweight to the largely American Methodist and Baptist churches. + +In later years, Anglophone Canadians, especially in Ontario, viewed the War of 1812 as a heroic and successful resistance against invasion and as a victory that defined them as a people. The myth that the Canadian militia had defeated the invasion almost single-handed, known logically as the "militia myth", became highly prevalent after the war, having been propounded by John Strachan, Anglican Bishop of York. + +Post War of 1812 and mid-19th century +In the aftermath of the War of 1812, pro-British conservatives led by Anglican Bishop John Strachan took control in Ontario ("Upper Canada") and promoted the Anglican religion as opposed to the more republican Methodist and Baptist churches. A small interlocking elite, known as the Family Compact took full political control. Democracy, as practiced in the US, was ridiculed. The policies had the desired effect of deterring immigration from the United States. Revolts in favor of democracy in Ontario and Quebec ("Lower Canada") in 1837 were suppressed; many of the leaders fled to the US. The American policy was to largely ignore the rebellions, and indeed ignore Canada generally in favor of westward expansion of the American Frontier. + +The Webster–Ashburton Treaty formalized the U.S.–Canada border in Maine, averting the Aroostook War. During the Manifest Destiny era, the "Fifty-Four Forty or Fight" agenda called for U.S. annexation of what became Western Canada; the U.S. and Britain instead agreed to a boundary of the 49th parallel. As harsher fugitive slave laws were passed, Canada became a destination for slaves escaping on the Underground Railroad. + +American Civil War + +During the American Civil War, the British Empire was neutral. About 40,000 Canadians volunteered for the Union Army—many already lived in the U.S., and a few for the Confederate Army. However, hundreds of Americans who were called up in the draft fled to Canada. + +Several events caused strained relations between the British Empire and the United States, over the former's unofficial role in supporting the Confederacy. Blockade runners loaded with arms came from Britain and made use of Canadian ports in the Maritimes to break through the Union blockade to deliver the weaponry to the Confederacy in exchange for cotton. Attacks were made on American merchant shipping by British-built Confederate warships such as CSS Alabama. On December 7, 1863, pro-Confederate Canadian sympathizers hijacked an American steamer and killed a crew member off the coast of Cape Cod, Massachusetts then used the steamer, originally intended as a blockade runner, to flee back to the Maritimes where they were later able to escape justice for murder and piracy. Confederate Secret Service agents also used Canada as a base to attack American border towns, such as St. Albans, Vermont on October 19, 1864, where they killed an American citizen, robbed three banks of over US$200,000, then escaped to Canada where they were arrested but then released by a Canadian court to widespread American anger. Many Americans suspected – falsely – that the Canadian government knew of the raid ahead of time. American Secretary of State William H. Seward let the British government know that "it is impossible to consider those proceedings as either legal, just or friendly towards the United States." + +Alabama claims + +Americans were angry at Britain's perceived support for the Confederacy during the American Civil War. Some leaders demanded a huge payment, on the premise that British involvement had lengthened the war by two years, a claim confirmed by post-Civil War historians and scholars. Senator Charles Sumner, the chairman of the Senate Foreign Relations Committee, originally wanted to ask for $2 billion in war reparations, or alternatively the ceding of all of Canada to the United States. + +When American Secretary of State William H. Seward negotiated the Alaska Purchase with Russia in 1867, he intended it as the first step in a comprehensive plan to gain control of the entire northwest Pacific Coast. Seward was a firm believer in Manifest Destiny, primarily for its commercial advantages to the U.S. Seward expected British Columbia to seek annexation to the U.S. and thought Britain might accept this in exchange for the Alabama claims. Soon other elements endorsed annexation, Their plan was to annex British Columbia, Red River Colony (Manitoba), and Nova Scotia, in exchange for dropping the damage claims. The idea reached a peak in the spring and summer of 1870, with American expansionists, Canadian separatists, and Pro-American Englishmen seemingly combining forces. The plan was dropped for multiple reasons. London continued to stall, American commercial and financial groups pressed Washington for a quick settlement of the dispute on a cash basis, growing Canadian nationalist sentiment in British Columbia called for staying inside the British Empire, Congress became preoccupied with Reconstruction, and most Americans showed little interest in territorial expansion. + +The "Alabama Claims" dispute went to international arbitration. In one of the first major cases of arbitration, the tribunal in 1872 rejected the American claims for damages relating to the British blockade running but ordered Britain to pay $15.5 million only for damages caused by British-built Confederate ships. Britain paid and the episode ended in peaceful relations. + +Late 19th century + +Canada became a self-governing dominion in 1867 in internal affairs while Britain retained control of diplomacy and of defence policy. Prior to Confederation, there was an Oregon boundary dispute in which the Americans claimed the 54th degree latitude. The Oregon Treaty of 1846 largely resolved the issue, splitting the disputed territory – the northern half became British Columbia, and the southern half eventually formed the states of Washington and Oregon. + +Strained relations with America continued, however, due to a series of small-scale armed incursions called the "Fenian raids" conducted by Irish-American Civil War veterans across the border from 1866 to 1871 in an attempt to trade Canada for Irish independence. The American government, angry at Canadian tolerance of Confederate raiders during the American Civil War of 1861–1865, moved very slowly to disarm the Fenians. The Fenian raids were small-scale attacks carried out by the Fenian Brotherhood, an Irish Republican organization based among Irish Catholics in the United States. Targets included British Army forts, customs posts and other locations near the border. The raids were small, unsuccessful episodes in 1866, and again from 1870 to 1871. They aimed to bring pressure on Great Britain to withdraw from Ireland. None of these raids achieved their aims and all were quickly defeated by local Canadian forces. + +The British government, in charge of diplomatic relations, protested cautiously, as Anglo-American relations were tense. Much of the tension was relieved as the Fenians faded away and in 1872 by the settlement of the Alabama Claims, when Britain paid the U.S. $15.5 million for war losses caused by warships built in Britain and sold to the Confederacy. + +Disputes over ocean boundaries on Georges Bank and over fishing, whaling, and sealing rights in the Pacific were settled by international arbitration, setting an important precedent. + +Early 20th century + +Alaska boundary + +A short-lived controversy was the Alaska boundary dispute, settled in favor of the United States in 1903. The issue was unimportant until the Klondike Gold Rush brought tens of thousands of men to Canada's Yukon, and they had to arrive through American ports. Canada needed its port and claimed that it had a legal right to a port near the present American town of Haines, Alaska. It would provide an all-Canadian route to the rich goldfields. The dispute was settled by arbitration, and the British delegate voted with the Americans—to the astonishment and disgust of Canadians who suddenly realized that Britain considered its relations with the United States paramount compared to those with Canada. The arbitration validated the status quo, but made Canada angry at London. + +1907 saw a minor controversy over USS Nashville sailing into the Great Lakes via Canada without Canadian permission. To head off future embarrassments, in 1909 the two sides signed the International Boundary Waters Treaty and the International Joint Commission was established to manage the Great Lakes and keep them disarmed. It was amended in World War II to allow the building and training of warships. + +Free trade rejected + +Anti-Americanism reached a shrill peak in 1911 in Canada. The Liberal government in 1911 negotiated a Reciprocity treaty with the U.S. that would lower trade barriers. Canadian manufacturing interests were alarmed that free trade would allow the bigger and more efficient American factories to take their markets. The Conservatives made it a central campaign issue in the 1911 election, warning that it would be a "sell out" to the United States with economic annexation a special danger. The Conservative slogan was "No truck or trade with the Yankees", as they appealed to Canadian nationalism and nostalgia for the British Empire to win a major victory. + +World War I +British Canadians were annoyed in 1914–16 when the United States insisted on neutrality and seemed to profit heavily while Canada was sacrificing its wealth and its youth. However when the US finally declared war on Germany in April 1917, there was swift cooperation and friendly coordination, as one historian reports: Official co-operation between Canada and the United States—the pooling of grain, fuel, power, and transportation resources, the underwriting of a Canadian loan by bankers of New York—produced a good effect on the public mind. Canadian recruiting detachments were welcomed in the United States, while a reciprocal agreement was ratified to facilitate the return of draft-evaders. A Canadian War Mission was established at Washington, and in many other ways the activities of the two countries were coordinated for efficiency. Immigration regulations were relaxed and thousands of American farmhands crossed the border to assist in harvesting Canadian crops. Officially and publicly, at least, the two nations were on better terms than ever before in their history, and on the American side, this attitude extended through almost all classes of society. + +Post-First World War +Canada demanded and received permission from London to send its own delegation to the Versailles Peace Talks in 1919, with the proviso that it sign the treaty under the British Empire. Canada subsequently took responsibility for its own foreign and military affairs in the 1920s. Its first ambassador to the United States, Vincent Massey, was named in 1927. The United States' first ambassador to Canada was William Phillips. Canada became an active member of the British Commonwealth, the League of Nations, and the World Court, none of which included the U.S. + +In July 1923, as part of his Pacific Northwest tour and a week before his death, US President Warren Harding visited Vancouver, making him the first head of state of the United States to visit confederated Canada. The then Premier of British Columbia, John Oliver, and then mayor of Vancouver, Charles Tisdall, hosted a lunch in his honor at the Hotel Vancouver. Over 50,000 people heard Harding speak in Stanley Park. A monument to Harding designed by Charles Marega was unveiled in Stanley Park in 1925. + +Relations with the United States were cordial until 1930 when Canada vehemently protested the new Smoot–Hawley Tariff Act by which the U.S. raised tariffs (taxes) on products imported from Canada. Canada retaliated with higher tariffs of its own against American products and moved toward more trade within the British Commonwealth. U.S.–Canadian trade fell 75% as the Great Depression dragged both countries down. + +Down to the 1920s, the war and naval departments of both nations designed hypothetical war game scenarios on paper with the other as an enemy. These were routine training exercises; the departments were never told to get ready for a real war. In 1921, Canada developed Defence Scheme No. 1 for an attack on American cities and for forestalling an invasion by the United States until British reinforcements arrived. Through the later 1920s and 1930s, the United States Army War College developed a plan for a war with the British Empire waged largely on North American territory, in War Plan Red. + +Herbert Hoover meeting in 1927 with British Ambassador Sir Esme Howard agreed on the "absurdity of contemplating the possibility of war between the United States and the British Empire". + +In 1938, as the roots of World War II were set in motion, U.S. President Franklin Roosevelt gave a public speech at Queen's University in Kingston, Ontario, declaring that the United States would not sit idly by if another power tried to dominate Canada. Diplomats saw it as a clear warning to Germany not to attack Canada. + +Second World War +The two nations cooperated closely in World War II, as both nations saw new levels of prosperity and a determination to defeat the Axis powers. Prime Minister William Lyon Mackenzie King and President Franklin D. Roosevelt were determined not to repeat the mistakes of their predecessors. They met in August 1940 at Ogdensburg, issuing a declaration calling for close cooperation, and formed the Permanent Joint Board on Defense (PJBD). + +King sought to raise Canada's international visibility by hosting the August 1943 Quadrant conference in Quebec on military and political strategy; he was a gracious host but was kept out of the important meetings by Winston Churchill and Roosevelt. + +Canada allowed the construction of the Alaska Highway and participated in the building of the atomic bomb. 49,000 Americans joined the RCAF (Canadian) or RAF (British) air forces through the Clayton Knight Committee, which had Roosevelt's permission to recruit in the U.S. in 1940–42. + +American attempts in the mid-1930s to integrate British Columbia into a united West Coast military command had aroused Canadian opposition. Fearing a Japanese invasion of Canada's vulnerable British Columbia Coast, American officials urged the creation of a united military command for an eastern Pacific Ocean theater of war. Canadian leaders feared American imperialism and the loss of autonomy more than a Japanese invasion. In 1941, Canadians successfully argued within the PJBD for mutual cooperation rather than the unified command for the West Coast. + +Newfoundland +The United States built large military bases in Newfoundland during World War II. At the time it was a British crown colony, having lost dominion status. The American spending ended the depression and brought new prosperity; Newfoundland's business community sought closer ties with the United States as expressed by the Economic Union Party. Ottawa took notice and wanted Newfoundland to join Canada, which it did after hotly contested referendums. There was little demand in the United States for the acquisition of Newfoundland, so the United States did not protest the British decision not to allow an American option on the Newfoundland referendum. + +Cold War + +Prime Minister William Lyon Mackenzie King, working closely with his Foreign Minister Louis St. Laurent, handled foreign relations 1945–48 in a cautious fashion. Canada donated money to the United Kingdom to help it rebuild; was elected to the UN Security Council; and helped design NATO. However, Mackenzie King rejected free trade with the United States, and decided not to play a role in the Berlin airlift. Canada had been actively involved in the League of Nations, primarily because it could act separately from Britain. It played a modest role in the postwar formation of the United Nations, as well as the International Monetary Fund. It played a somewhat larger role in 1947 in designing the General Agreement on Tariffs and Trade. +After the mid-20th century onwards, Canada and the United States became extremely close partners. Canada was a close ally of the United States during the Cold War. + +Vietnam War resisters + +While Canada openly accepted draft evaders and later deserters from the United States, there was never a serious international dispute due to Canada's actions, while Sweden's acceptance was heavily criticized by the United States. The issue of accepting American exiles became a local political debate in Canada that focused on Canada's sovereignty in its immigration law. The United States did not become involved because American politicians viewed Canada as a geographically close ally not worth disturbing. + +Nixon Shock 1971 + +The United States had become Canada's largest market, and after the war, the Canadian economy became dependent on smooth trade flows with the United States so much that in 1971 when the United States enacted the "Nixon Shock" economic policies (including a 10% tariff on all imports) it put the Canadian government into a panic. Washington refused to exempt Canada from its 1971 New Economic Policy, so Trudeau saw a solution in closer economic ties with Europe. Trudeau proposed a "Third Option" policy of diversifying Canada's trade and downgrading the importance of the American market. In a 1972 speech in Ottawa, Nixon declared the "special relationship" between Canada and the United States dead. + +Relations deteriorated on many points in the Nixon years (1969–74), including trade disputes, defense agreements, energy, fishing, the environment, cultural imperialism, and foreign policy. They changed for the better when Trudeau and President Jimmy Carter (1977–1981) found a better rapport. The late 1970s saw a more sympathetic American attitude toward Canadian political and economic needs, the pardoning of draft evaders who had moved to Canada, and the passing of old such as the Watergate scandal and the Vietnam War. Canada more than ever welcomed American investments during "the stagflation" that hurt both nations. + +1990s + +The main issues in Canada–U.S. relations in the 1990s focused on the North American Free Trade Agreement, which was signed in 1994. It created a common market that by 2014 was worth $19 trillion, encompassed 470 million people, and had created millions of jobs. Wilson says, "Few dispute that NAFTA has produced large and measurable gains for Canadian consumers, workers, and businesses". However, he adds, "NAFTA has fallen well short of expectations." + +Migration history + +From the 1750s to the 21st century, there has been an extensive mingling of the Canadian and American populations, with large movements in both directions. + +New England Yankees settled large parts of Nova Scotia before 1775 and were neutral during the American Revolution. At the end of the American Revolution, about 75,000 United Empire Loyalists moved out of the new United States to Nova Scotia, New Brunswick, and the lands of Quebec, east and south of Montreal. From 1790 to 1812 many farmers moved from New York and New England into Upper Canada (mostly to Niagara, and the north shore of Lake Ontario). In the mid and late 19th century gold rushes attracted American prospectors, mostly to British Columbia after the Cariboo Gold Rush, Fraser Canyon Gold Rush, and later to the Yukon Territory. In the early 20th century, the opening of land blocks in the Prairie Provinces attracted many farmers from the American Midwest. Many Mennonites immigrated from Pennsylvania and formed their own colonies. In the 1890s some Mormons went north to form communities in Alberta after the Church of Jesus Christ of Latter-day Saints rejected plural marriage. The 1960s saw the arrival of about 50,000 draft-dodgers who opposed the Vietnam War.Renee Kasinsky, "Refugees from Militarism: Draft Age Americans in Canada (1976) + +Canada was a way-station through which immigrants from other lands stopped for a while, ultimately heading to the U.S. In 1851–1951, 7.1 million people arrived in Canada (mostly from Continental Europe), and 6.6 million left Canada, most of them to the U.S. After 1850, the pace of industrialization and urbanization was much faster in the United States, drawing a wide range of immigrants from the North. By 1870, 1/6 of all the people born in Canada had moved to the United States, with the highest concentrations in New England, which was the destination of Francophone emigrants from Quebec and Anglophone emigrants from the Maritimes. It was common for people to move back and forth across the border, such as seasonal lumberjacks, entrepreneurs looking for larger markets, and families looking for jobs in the textile mills that paid much higher wages than in Canada. + +The southward migration slacked off after 1890, as Canadian industry began a growth spurt. By then, the American frontier was closing, and thousands of farmers looking for fresh land moved from the United States north into the Prairie Provinces. The net result of the flows was that in 1901 there were 128,000 American-born residents in Canada (3.5% of the Canadian population) and 1.18 million Canadian-born residents in the United States (1.6% of the U.S. population). + +In the late 19th and early 20th centuries, about 900,000 French Canadians moved to the U.S., with 395,000 residents there in 1900. Two-thirds went to mill towns in New England, where they formed distinctive ethnic communities. By the late 20th century, most had abandoned the French language (see New England French), but most kept the Catholic religion. About twice as many English Canadians came to the U.S., but they did not form distinctive ethnic settlements. + + Relations between political executives +The executive of each country is represented differently. The President of the United States serves as both the head of state and head of government, and his "administration" is the executive, while the Prime Minister of Canada is head of government only, and his or her "government" or "ministry" directs the executive. + + W. L. Mackenzie King and Franklin D. Roosevelt (October 1935 – April 1945) + +In 1940, W.L. Mackenzie King and Franklin D. Roosevelt signed a defense pact, known as the Ogdensburg Agreement. King hosted conferences for Churchill and Roosevelt, but did not participate in the talks. + + Louis St. Laurent and Harry S. Truman (November 1948 – January 1953) +Prime Minister Laurent and President Truman were both anti-communist during the early years of the Cold War. + + John G. Diefenbaker and Dwight Eisenhower (June 1957 – January 1961) + +President Dwight Eisenhower (1952–1961) took pains to foster good relations with Progressive Conservative John Diefenbaker (1957–1963). That led to approval of plans to join together in NORAD, an integrated air defence system, in mid-1957. Relations with President John Kennedy were much less cordial. Diefenbaker opposed apartheid in the South Africa and helped force it out of the Commonwealth of Nations. His indecision on whether to accept Bomarc nuclear missiles from the United States led to his government's downfall. + + John G. Diefenbaker and John F. Kennedy (January 1961 – April 1963) +Diefenbaker and President John F. Kennedy did not get along well personally. This was evident in Diefenbaker's response to the Cuban Missile Crisis, where he was slow to support the United States. However, Diefenbaker's Minister of Defence went behind Diefenbaker's back and did send Canada's military to high alert given Canada's legal treaty obligations, and in order to try and appease Kennedy. + + Lester B. Pearson and Lyndon B. Johnson (November 1963 – April 1968) +In 1965, Prime Minister Lester B. Pearson gave a speech in Philadelphia criticizing American involvement in the Vietnam War. This infuriated Lyndon B. Johnson, who gave him a harsh talk, saying "You don't come here and piss on my rug". + + Brian Mulroney and Ronald Reagan (September 1984 – January 1989) + +Relations between Brian Mulroney and Ronald Reagan were famously close. This relationship resulted in negotiations for the Canada–United States Free Trade Agreement, and the U.S.–Canada Air Quality Agreement to reduce acid-rain-causing emissions, both major policy goals of Mulroney, that would be finalized under the presidency of George H. W. Bush. Mulroney delivered eulogies at the funerals of both Ronald Reagan and George H. W. Bush. + + Jean Chrétien and Bill Clinton (November 1993 – January 2001) +Although Jean Chrétien was wary of appearing too close to President Bill Clinton, both men had a passion for golf. During a news conference with Prime Minister Chrétien in April 1997, President Clinton quipped "I don't know if any two world leaders have played golf together more than we have, but we meant to break a record". Their governments had many small trade quarrels over the Canadian content of American magazines, softwood lumber, and so on, but on the whole were quite friendly. Both leaders had run on reforming or abolishing NAFTA, but the agreement went ahead with the addition of environmental and labor side agreements. Crucially, the Clinton administration lent rhetorical support to Canadian unity during the 1995 referendum in Quebec on separation from Canada. + + Jean Chrétien and George W. Bush (January 2001 – December 2003) + +Relations between Chrétien and George W. Bush were strained throughout their overlapping times in office. Canada offered its full assistance to the U.S. as the September 11 attacks were unfolding. One tangible show of support was Operation Yellow Ribbon, in which more than 200 U.S.-bound flights were diverted to Canada after the U.S. shut down their airspace. Later, however, Chrétien publicly mused that U.S. foreign policy might be part of the "root causes" of terrorism. Some Americans criticized his "smug moralism", and Chrétien's public refusal to support the 2003 Iraq war was met with negative responses in the United States, especially among conservatives. + + Stephen Harper and George W. Bush (February 2006 – January 2009) +Stephen Harper and George W. Bush were thought to share warm personal relations and also close ties between their administrations. Because Bush was so unpopular among liberals in Canada (particularly in the media), this was underplayed by the Harper government. + +Shortly after being congratulated by Bush for his victory in February 2006, Harper rebuked U.S. ambassador to Canada David Wilkins for criticizing the Conservatives' plans to assert Canada's sovereignty over the Arctic Ocean waters with military force. + + Stephen Harper and Barack Obama (January 2009 – November 2015) + +President Barack Obama's first international trip was to Canada on February 19, 2009, thereby sending a strong message of peace and cooperation. With the exception of Canadian lobbying against "Buy American" provisions in the U.S. stimulus package, relations between the two administrations were smooth. + +They also held friendly bets on hockey games during the Winter Olympic season. In the 2010 Winter Olympics hosted by Canada in Vancouver, Canada defeated the US in both gold medal matches, entitling Stephen Harper to receive a case of Molson Canadian beer from Barack Obama; in reverse, if Canada had lost, Harper would have provided a case of Yuengling beer to Obama. During the 2014 Winter Olympics, alongside U.S. Secretary of State John Kerry & Minister of Foreign Affairs John Baird, Stephen Harper was given a case of Samuel Adams beer by Obama for the Canadian gold medal victory over the US in women's hockey, and the semi-final victory over the US in men's hockey. + + Canada–United States Regulatory Cooperation Council (RCC) (2011) +On February 4, 2011, Harper and Obama issued a "Declaration on a Shared Vision for Perimeter Security and Economic Competitiveness" and announced the creation of the Canada–United States Regulatory Cooperation Council (RCC) "to increase regulatory transparency and coordination between the two countries." + +Health Canada and the United States Food and Drug Administration (FDA) under the RCC mandate, undertook the "first of its kind" initiative by selecting "as its first area of alignment common cold indications for certain over-the-counter antihistamine ingredients (GC January 10, 2013)". + +On December 7, 2011, Harper flew to Washington, met with Obama and signed an agreement to implement the joint action plans that had been developed since the initial meeting in February. The plans called on both countries to spend more on border infrastructure, share more information on people who cross the border, and acknowledge more of each other's safety and security inspection on third-country traffic. An editorial in The Globe and Mail praised the agreement for giving Canada the ability to track whether failed refugee claimants have left Canada via the U.S. and for eliminating "duplicated baggage screenings on connecting flights". The agreement is not a legally binding treaty, and relies on the political will and ability of the executives of both governments to implement the terms of the agreement. These types of executive agreements are routine—on both sides of the Canada–U.S. border. + + Justin Trudeau and Barack Obama (November 2015 – January 2017) + +President Barack Obama and Prime Minister Justin Trudeau first met formally at the APEC summit meeting in Manila, Philippines in November 2015, nearly a week after the latter was sworn into the office. Both leaders expressed eagerness for increased cooperation and coordination between the two countries during the course of Trudeau's government with Trudeau promising an "enhanced Canada–U.S. partnership". + +On November 6, 2015, Obama announced the U.S. State Department's rejection of the proposed Keystone XL pipeline, the fourth phase of the Keystone oil pipeline system running between Canada and the United States, to which Trudeau expressed disappointment but said that the rejection would not damage Canada–U.S. relations and would instead provide a "fresh start" to strengthening ties through cooperation and coordination, saying that "the Canada–U.S. relationship is much bigger than any one project." Obama has since praised Trudeau's efforts to prioritize the reduction of climate change, calling it "extraordinarily helpful" to establish a worldwide consensus on addressing the issue. + +Although Trudeau has told Obama his plans to withdraw Canada's McDonnell Douglas CF-18 Hornet jets assisting in the American-led intervention against ISIL, Trudeau said that Canada will still "do more than its part" in combating the terrorist group by increasing the number of Canadian special forces members training and fighting on ground in Iraq and Syria. + +Trudeau visited the White House for an official visit and state dinner on March 10, 2016. Trudeau and Obama were reported to have shared warm personal relations during the visit, making humorous remarks about which country was better at hockey and which country had better beer. Obama complimented Trudeau's 2015 election campaign for its "message of hope and change" and "positive and optimistic vision". Obama and Trudeau also held "productive" discussions on climate change and relations between the two countries, and Trudeau invited Obama to speak in the Canadian parliament in Ottawa later in the year. + + Justin Trudeau and Donald Trump (January 2017 – January 2021) + +Following the victory of Donald Trump in the 2016 U.S. presidential election, Trudeau congratulated him and invited him to visit Canada at the "earliest opportunity". Prime Minister Trudeau and President Trump formally met for the first time at the White House on February 13, 2017, nearly a month after Trump was sworn into the office. Trump has ruffled relations with Canada with tariffs on softwood lumber. Diafiltered Milk was brought up by Trump as an area that needed negotiating. + +In 2018, Trump and Trudeau negotiated the United States–Mexico–Canada Agreement (USMCA), a free trade agreement concluded between Canada, Mexico, and the United States that succeeded the North American Free Trade Agreement (NAFTA). The agreement has been characterized as "NAFTA 2.0", or "New NAFTA", since many provisions from NAFTA were incorporated and its changes were seen as largely incremental. On July 1, 2020, the USMCA entered into force in all member states. + +In June 2018, after Trudeau explained that Canadians would not be "pushed around" by the Trump tariffs on Canada's aluminum and steel, Trump labelled Trudeau as "dishonest" and "meek", and accused Trudeau of making "false statements", although it is unclear which statements Trump was referring to. Trump's adviser on trade, Peter Navarro, said that there was a "special place in hell" for Trudeau as he employed "bad faith diplomacy with President Donald J. Trump and then tries to stab him in the back on the way out the door ... that comes right from Air Force One." Days later, Trump said that Trudeau's comments are "going to cost a lot of money for the people of Canada". + +In June 2019, the U.S. State Department spokesperson Morgan Ortagus said the US "view Canada's claim that the waters of the Northwest Passage are internal waters of Canada as inconsistent with international law". + + Justin Trudeau and Joe Biden (January 2021 – present) + +Following the victory of Joe Biden in the 2020 U.S. presidential election, Trudeau congratulated him on his successful victory; indicating a significant improvement in Canada–U.S. relationships, which had been strained in the years prior during the Presidency of Donald Trump. + +On January 22, 2021, Biden and Trudeau held their first phone call. Trudeau was the first foreign leader to receive a phone call from Biden as President. + +On February 23, 2021, Biden and Trudeau held their first bilateral meeting. Although virtual, the bilateral meeting was Biden's first as President. The two leaders discussed "COVID-19, economic recovery, climate change, and refugees and migration" among other subjects. + + Military and security + +The Canadian military, like forces of other NATO countries, fought alongside the United States in most major conflicts since World War II, including the Korean War, the Gulf War, the Kosovo War, and most recently the war in Afghanistan. The main exceptions to this were the Canadian government's opposition to the Vietnam War and the Iraq War, which caused some brief diplomatic tensions. Despite these issues, military relations have remained close. + +American defense arrangements with Canada are more extensive than with any other country. The Permanent Joint Board of Defense, established in 1940, provides policy-level consultation on bilateral defense matters. The United States and Canada share North Atlantic Treaty Organization (NATO) mutual security commitments. In addition, American and Canadian military forces have cooperated since 1958 on continental air defense within the framework of the North American Aerospace Defense Command (NORAD). Canadian forces have provided indirect support for the American invasion of Iraq that began in 2003. Moreover, interoperability with the American armed forces has been a guiding principle of Canadian military force structuring and doctrine since the end of the Cold War. Canadian navy frigates, for instance, integrate seamlessly into American carrier battle groups. + +In commemoration of the 200th Anniversary of the War of 1812 ambassadors from Canada and the US, and naval officers from both countries gathered at the Pritzker Military Library on August 17, 2012, for a panel discussion on Canada-US relations with emphasis on national security-related matters. Also as part of the commemoration, the navies of both countries sailed together throughout the Great Lakes region. + +According to Canadian and U.S. officials, a U.S. fighter jet shot down an unidentified object over Canada on 23 February 2023 on the orders of Prime Minister Justin Trudeau. The operation was coordinated by the North American Aerospace Defense Command (NORAD), a joint U.S.-Canadian air defense organization. Prime Minister Trudeau said investigators were looking for debris. This decision was made following the conversation between Biden and Trudeau. + +The foreign policies of the countries have been closely aligned, yet ultimately independent, since the Cold War. There is also debate on whether the Northwest Passage is in international waters or under Canadian sovereignty. + + Iran hostage crisis + +During the 1979 revolution, protesters invaded the US embassy and took many hostages. Six Americans evaded capture and were sheltered by the British and Canadian diplomatic missions. After a US military operation to get them out of Iran failed, Canadian diplomat Ken Taylor, Secretary of State for External Affairs Flora MacDonald, and Prime Minister Joe Clark decided to smuggle the six Americans out of Iran on an international flight by using Canadian passports. An Order in Council was made to issue multiple official copies of Canadian passports with fake identities to the American diplomats in the Canadian sanctuary. The passports contained forged Iranian visas prepared by the US Central Intelligence Agency. + + War in Afghanistan + +Canada's elite JTF2 unit joined American special forces in Afghanistan shortly after the al-Qaida attacks on September 11, 2001. Canadian forces joined the multinational coalition in Operation Anaconda in January 2002. On April 18, 2002, an American pilot bombed Canadian forces involved in a training exercise, killing four and wounding eight Canadians. A joint American-Canadian inquiry determined the cause of the incident to be pilot error, in which the pilot interpreted ground fire as an attack; the pilot ignored orders that he felt were "second-guessing" his field tactical decision. Canadian forces assumed a six-month command rotation of the International Security Assistance Force in 2003; in 2005, Canadians assumed operational command of the multi-national Brigade in Kandahar, with 2,300 troops, and supervises the Provincial Reconstruction Team in Kandahar, where al-Qaida forces are most active. Canada has also deployed naval forces in the Persian Gulf since 1991 in support of the UN Gulf Multinational Interdiction Force. + +The Canadian Embassy in Washington, D.C. maintains a public relations website named CanadianAlly.com, which is intended "to give American citizens a better sense of the scope of Canada's role in North American and Global Security and the War on Terror". + +The New Democratic Party and some recent Liberal leadership candidates have expressed opposition to Canada's expanded role in the Afghan conflict on the ground that it is inconsistent with Canada's historic role (since the Second World War) of peacekeeping operations. + + 2003 Invasion of Iraq + +According to contemporary polls, 71% of Canadians were opposed to the 2003 invasion of Iraq. Many Canadians, and the former Liberal Cabinet headed by Paul Martin (as well as many Americans such as Bill Clinton and Barack Obama), made a policy distinction between conflicts in Afghanistan and Iraq, unlike the Bush Doctrine, which linked these together in a "Global war on terror". + + Responding to ISIS/Daesh + +Canada has been involved in international responses to the threats from Daesh/ISIS/ISIL in Syria and Iraq, and is a member of the Global Coalition to Counter Daesh. In October 2016, Foreign Affairs Minister Dion and National Defence Minister Sajjan met the U.S. special envoy for this coalition. The Americans thanked Canada "for the role of Canadian Armed Forces (CAF) in providing training and assistance to Iraqi security forces, as well as the CAF's role in improving essential capacity-building capabilities with regional forces". + + Illicit drugs + +In 2003, the American government became concerned when members of the Canadian government announced plans to decriminalize marijuana. David Murray, an assistant to U.S. Drug Czar John P. Walters, said in a CBC interview that, "We would have to respond. We would be forced to respond." However, the election of the Conservative Party in early 2006 halted the liberalization of marijuana laws until the Liberal Party of Canada legalised recreational cannabis use in 2018. + +A 2007 joint report by American and Canadian officials on cross-border drug smuggling indicated that, despite their best efforts, "drug trafficking still occurs in significant quantities in both directions across the border. The principal illicit substances smuggled across our shared border are MDMA (Ecstasy), cocaine, and marijuana." The report indicated that Canada was a major producer of Ecstasy and marijuana for the U.S. market, while the U.S. was a transit country for cocaine entering Canada. + + Trade + +Canada and the United States have the world's second largest trading relationship, with huge quantities of goods and people flowing across the border each year. Since the 1987 Canada–United States Free Trade Agreement, there have been no tariffs on most goods passed between the two countries. + +In the course of the softwood lumber dispute, the U.S. has placed tariffs on Canadian softwood lumber because of what it argues is an unfair Canadian government subsidy, a claim that Canada disputes. The dispute has cycled through several agreements and arbitration cases. Other notable disputes include the Canadian Wheat Board, and Canadian cultural protectionism in cultural industries such as magazines, radio, and television. Canadians have been criticized about such things as the ban on beef since a case of Mad Cow disease was discovered in 2003 in cows from the United States (and a few subsequent cases) and the high American agricultural subsidies. Concerns in Canada also run high over aspects of the North American Free Trade Agreement (NAFTA) such as Chapter 11. + + Environmental issues + +A principal instrument of this cooperation is the International Joint Commission (IJC), established as part of the Boundary Waters Treaty of 1909 to resolve differences and promote international cooperation on boundary waters. The Great Lakes Water Quality Agreement of 1972 is another historic example of joint cooperation in controlling trans-border water pollution. However, there have been some disputes. Most recently, the Devil's Lake Outlet, a project instituted by North Dakota, has angered Manitobans who fear that their water may soon become polluted as a result of this project. + +Beginning in 1986, the Canadian government of Brian Mulroney began pressing the Reagan administration for an "Acid Rain Treaty" in order to do something about U.S. industrial air pollution causing acid rain in Canada. The Reagan administration was hesitant, and questioned the science behind Mulroney's claims. However, Mulroney was able to prevail. The product was the signing and ratification of the Air Quality Agreement of 1991 by the first Bush administration. Under that treaty, the two governments consult semi-annually on trans-border air pollution, which has demonstrably reduced acid rain, and they have since signed an annex to the treaty dealing with ground level ozone in 2000. Despite this, trans-border air pollution remains an issue, particularly in the Great Lakes-St. Lawrence watershed during the summer. The main source of this trans-border pollution results from coal-fired power stations, most of them located in the Midwestern United States. As part of the negotiations to create NAFTA, Canada and the U.S. signed, along with Mexico, the North American Agreement on Environmental Cooperation that created the Commission for Environmental Cooperation that monitors environmental issues across the continent, publishing the North American Environmental Atlas as one aspect of its monitoring duties. + +Currently neither of the countries' governments support the Kyoto Protocol, which set out time scheduled curbing of greenhouse gas emissions. Unlike the United States, Canada has ratified the agreement. Yet after ratification, due to internal political conflict within Canada, the Canadian government does not enforce the Kyoto Protocol, and has received criticism from environmental groups and from other governments for its climate change positions. In January 2011, the Canadian minister of the environment, Peter Kent, explicitly stated that the policy of his government with regards to greenhouse gas emissions reductions is to wait for the United States to act first, and then try to harmonize with that action – a position that has been condemned by environmentalists and Canadian nationalists, and as well as scientists and government think-tanks. + +With large freshwater supplies in Canada and long-term concern about water scarcity in parts of the United States, water export availability or restriction has been identified as an issue of possible future contention between the countries. + + Newfoundland fisheries dispute +The United States and Britain had a long-standing dispute about the rights of Americans fishing in the waters near Newfoundland. Before 1776, there was no question that American fishermen, mostly from Massachusetts, had rights to use the waters off Newfoundland. In the peace treaty negotiations of 1783, the Americans insisted on a statement of these rights. However, France, an American ally, disputed the American position because France had its own specified rights in the area and wanted them to be exclusive. The Treaty of Paris (1783) gave the Americans not rights, but rather "liberties" to fish within the territorial waters of British North America and to dry fish on certain coasts. + +After the War of 1812, the Convention of 1818 between the United States and Britain specified exactly what liberties were involved. Canadian and Newfoundland fishermen contested these liberties in the 1830s and 1840s. The Canadian–American Reciprocity Treaty of 1854, and the Treaty of Washington of 1871 spelled-out the liberties in more detail. However the Treaty of Washington expired in 1885, and there was a continuous round of disputes over jurisdictions and liberties. Britain and the United States sent the issue to the Permanent Court of Arbitration in The Hague in 1909. It produced a compromise settlement that permanently ended the problems. + + Common memberships +Canada and the United States both hold membership in a number of multinational organizations, including: + + Arctic Council + Asia-Pacific Economic Cooperation + Canadian Hockey League (CHL) + CONCACAF + FIBA + FIFA + Food and Agriculture Organization + G7 + G-10 + G-20 major economies + International Chamber of Commerce + International Development Association + International Ice Hockey Federation (IIHF) + International Monetary Fund (IMF) + International Olympic Committee (IOC) + Interpol + Major League Baseball (MLB) + Major League Soccer (MLS) + National Basketball Association (NBA) + National Hockey League (NHL) + National Lacrosse League (NLL) + North American Free Trade Agreement (NAFTA) + North American Aerospace Defense Command (NORAD) + North American Numbering Plan + North Atlantic Treaty Organization (NATO) + Organization of American States + Organisation for Economic Co-operation and Development (OECD) + Security and Prosperity Partnership of North America + UKUSA Community + United Nations (UN) + UNESCO + World Bowling + World Health Organization (WHO) + World Trade Organization (WTO) + World Bank + World Rugby + + Territorial disputes + + +The two countries have had a number of territorial disputes throughout their histories. Current maritime territorial disputes between the two countries include the Beaufort Sea, Dixon Entrance, Strait of Juan de Fuca, San Juan Islands, Machias Seal Island, and North Rock. Additionally, the United States is one of several countries that contends the Northwest Passage is international waters; whereas the Canadian government asserts it forms Canadian Internal Waters. The Inside Passage is also disputed as international waters by the United States. + +Historical boundary disputes include the Aroostook War at the Maine–New Brunswick border; the Oregon boundary dispute at the present day British Columbia–Washington border; and the Alaska Boundary Dispute at the Alaska–British Columbia border. The Maine–New Brunswick boundary dispute was resolved through the Webster–Ashburton Treaty in 1842, the Oregon boundary dispute through the Oregon Treaty of 1846, and the Alaska boundary dispute through arbitration in 1903. + + Northwest Passage + +A long-simmering dispute between Canada and the U.S. involves the issue of Canadian sovereignty over the Northwest Passage (the sea passages in the Arctic). Canada's assertion that the Northwest Passage represents internal (territorial) waters has been challenged by other countries, especially the U.S., which argue that these waters constitute an international strait (international waters). Canadians were alarmed when Americans drove the reinforced oil tanker through the Northwest Passage in 1969, followed by the icebreaker Polar Sea in 1985, which actually resulted in a minor diplomatic incident. In 1970, the Canadian parliament enacted the Arctic Waters Pollution Prevention Act, which asserts Canadian regulatory control over pollution within a 100-mile zone. In response, the United States in 1970 stated, "We cannot accept the assertion of a Canadian claim that the Arctic waters are internal waters of Canada. ... Such acceptance would jeopardize the freedom of navigation essential for United States naval activities worldwide." A compromise of sorts was reached in 1988, by an agreement on "Arctic Cooperation", which pledges that voyages of American icebreakers "will be undertaken with the consent of the Government of Canada". However the agreement did not alter either country's basic legal position. Paul Cellucci, the American ambassador to Canada, in 2005 suggested to Washington that it should recognize the straits as belonging to Canada. His advice was rejected and Harper took opposite positions. The U.S. opposes Harper's proposed plan to deploy military icebreakers in the Arctic to detect interlopers and assert Canadian sovereignty over those waters. + + Views of presidents and prime ministers +Presidents and prime ministers typically make formal or informal statements that indicate the diplomatic policy of their administration. Diplomats and journalists at the time—and historians since—dissect the nuances and tone to detect the warmth or coolness of the relationship. + Prime Minister John A. Macdonald, speaking at the beginning of the 1891 election (fought mostly over Canadian free trade with the United States), arguing against closer trade relations with the U.S. stated "As for myself, my course is clear. A British subject I was born—a British subject I will die. With my utmost effort, with my latest breath, will I oppose the 'veiled treason' which attempts by sordid means and mercenary proffers to lure our people from their allegiance." (February 3, 1891.) + +Canada's first Prime Minister also said: + + Prime Minister John Sparrow Thompson, angry at failed trade talks in 1888, privately complained to his wife, Lady Thompson, that "These Yankee politicians are the lowest race of thieves in existence." + After the World War II years of close military and economic cooperation, President Harry S. Truman said in 1947 that "Canada and the United States have reached the point where we can no longer think of each other as 'foreign' countries." + President John F. Kennedy told Parliament in Ottawa in May 1961 that "Geography has made us neighbors. History has made us friends. Economics has made us partners. And necessity has made us allies. Those whom nature hath so joined together, let no man put asunder." + President Lyndon Johnson helped open Expo '67 with an upbeat theme, saying that "We of the United States consider ourselves blessed. We have much to give thanks for. But the gift of providence we cherish most is that we were given as our neighbours on this wonderful continent the people and the nation of Canada." Remarks at Expo '67, Montreal, May 25, 1967. + + Prime Minister Pierre Elliot Trudeau famously said that being America's neighbour "is like sleeping with an elephant. No matter how friendly and even-tempered the beast, if one can call it that, one is affected by every twitch and grunt."J. L. Granatstein and Robert Bothwell, Pirouette: Pierre Trudeau and Canadian Foreign Policy (1991) p. 51 + Prime Minister Pierre Elliot Trudeau, sharply at odds with the U.S. over Cold War policy, warned at a press conference in 1971 that the overwhelming American presence posed "a danger to our national identity from a cultural, economic and perhaps even military point of view." + President Richard Nixon, in a speech to Parliament in 1972 was angry at Trudeau, declared that the "special relationship" between Canada and the United States was dead. "It is time for us to recognize", he stated, "that we have very separate identities; that we have significant differences; and that nobody's interests are furthered when these realities are obscured." + In late 2001, President George W. Bush did not mention Canada during a speech in which he thanked a list of countries who had assisted in responding to the events of September 11, although Canada had provided military, financial, and other support. Ten years later, David Frum, one of President Bush's speechwriters, stated that it was an unintentional omission. + Prime Minister Stephen Harper, in a statement congratulating Barack Obama on his inauguration, stated that "The United States remains Canada's most important ally, closest friend and largest trading partner and I look forward to working with President Obama and his administration as we build on this special relationship." + President Barack Obama, speaking in Ottawa at his first official international visit on February 19, 2009, said, "I love this country. We could not have a better friend and ally." + + Public opinion +Today there remain cross-border cultural ties and according to Gallup's annual public opinion polls, Canada has consistently been Americans' favorite nation, with 96% of Americans viewing Canada favorably in 2012.Americans Give Record-High Ratings to Several U.S. Allies Gallup As of spring 2013, 64% of Canadians had a favorable view of the U.S. and 81% expressed confidence in then-US President Obama to do the right thing in international matters. According to the same poll, 30% viewed the U.S. negatively. In addition, according to Spring 2017 Global Attitudes Survey, 43% of Canadians view the U.S. positively, while 51% hold a negative view. More recently, however, a poll in January 2018 showed Canadians' approval of U.S. leadership dropped by over 40 percentage points under President Donald Trump, in line with the view of residents of many other U.S. allied and neutral countries. Since then, Canadian opinion of the U.S. has improved significantly, following an international rebound in the U.S image abroad following the transition as President of the United States from Donald Trump to Joe Biden, with 61% of Canadians having a favorable opinion of the United States in 2021. + + Anti-Americanism + +Since the arrival of the Loyalists as refugees from the American Revolution in the 1780s, historians have identified a constant theme of Canadian fear of the United States and of "Americanization" or a cultural takeover. In the War of 1812, for example, the enthusiastic response by French militia to defend Lower Canada reflected, according to Heidler and Heidler (2004), "the fear of Americanization". Scholars have traced this attitude over time in Ontario and Quebec. + +Canadian intellectuals who wrote about the U.S. in the first half of the 20th century identified America as the world center of modernity, and deplored it. Anti-American Canadians (who admired the British Empire) explained that Canada had narrowly escaped American conquest with its rejection of tradition, its worship of "progress" and technology, and its mass culture; they explained that Canada was much better because of its commitment to orderly government and societal harmony. There were a few ardent defenders of the nation to the south, notably liberal and socialist intellectuals such as F. R. Scott and Jean-Charles Harvey (1891–1967). + +Looking at television, Collins (1990) finds that it is in Anglophone Canada that fear of cultural Americanization is most powerful, for there the attractions of the U.S. are strongest. Meren (2009) argues that after 1945, the emergence of Quebec nationalism and the desire to preserve French-Canadian cultural heritage led to growing anxiety regarding American cultural imperialism and Americanization. In 2006 surveys showed that 60 percent of Québécois had a fear of Americanization, while other surveys showed they preferred their current situation to that of the Americans in the realms of health care, quality of life as seniors, environmental quality, poverty, educational system, racism and standard of living. While agreeing that job opportunities are greater in America, 89 percent disagreed with the notion that they would rather be in the United States, and they were more likely to feel closer to English Canadians than to Americans. However, there is evidence that the elites and Quebec are much less fearful of Americanization, and much more open to economic integration than the general public. + +The history has been traced in detail by a leading Canadian historian J.L. Granatstein in Yankee Go Home: Canadians and Anti-Americanism (1997). Current studies report the phenomenon persists. Two scholars report, "Anti-Americanism is alive and well in Canada today, strengthened by, among other things, disputes related to NAFTA, American involvement in the Middle East, and the ever-increasing Americanization of Canadian culture." Jamie Glazov writes, "More than anything else, Diefenbaker became the tragic victim of Canadian anti-Americanism, a sentiment the prime minister had fully embraced by 1962. [He was] unable to imagine himself (or his foreign policy) without enemies." Historian J. M. Bumsted says, "In its most extreme form, Canadian suspicion of the United States has led to outbreaks of overt anti-Americanism, usually spilling over against American residents in Canada." John R. Wennersten writes, "But at the heart of Canadian anti-Americanism lies a cultural bitterness that takes an American expatriate unaware. Canadians fear the American media's influence on their culture and talk critically about how Americans are exporting a culture of violence in its television programming and movies." However Kim Nossal points out that the Canadian variety is much milder than anti-Americanism in some other countries. By contrast Americans show very little knowledge or interest one way or the other regarding Canadian affairs. Canadian historian Frank Underhill, quoting Canadian playwright Merrill Denison summed it up: "Americans are benevolently ignorant about Canada, whereas Canadians are malevolently informed about the United States." + + Canadian public opinion on U.S. presidents + +United States President George W. Bush was "deeply disliked" by a majority of Canadians according to the Arizona Daily Sun. A 2004 poll found that more than two thirds of Canadians favoured Democrat John Kerry over Bush in the 2004 presidential election, with Bush's lowest approval ratings in Canada being in the province of Quebec where just 11% of the population supported him. Canadian public opinion of Barack Obama was significantly more positive. A 2012 poll found that 65% of Canadians would vote for Obama in the 2012 presidential election "if they could" while only 9% of Canadians would vote for his Republican opponent Mitt Romney. The same study found that 61% of Canadians felt that the Obama administration had been "good" for America, while only 12% felt it had been "bad". Similarly, a Pew Research poll conducted in June 2016 found that 83% of Canadians were "confident in Obama to do the right thing regarding world affairs". The study also found that a majority of members of all three major Canadian political parties supported Obama, and also found that Obama had slightly higher approval ratings in Canada in 2012 than he did in 2008. John Ibbitson of The Globe and Mail stated in 2012 that Canadians generally supported Democratic presidents over Republican presidents, citing how President Richard Nixon was "never liked" in Canada and that Canadians generally did not approve of Prime Minister Brian Mulroney's friendship with President Ronald Reagan. + +A November 2016 poll found 82% of Canadians preferred Hillary Clinton over Donald Trump. A January 2017 poll found that 66% of Canadians "disapproved" of Donald Trump, with 23% approving of him and 11% being "unsure". The poll also found that only 18% of Canadians believed Trump's presidency would have a positive impact on Canada, while 63% believed it would have a negative effect. A July 2019 poll found 79% of Canadians preferred Joe Biden or Bernie Sanders over Trump. A Pew Research poll released in June 2021, showed that Canadian opinion of American president Joe Biden is much more favorable than his predecessor Donald Trump, with 77% approving of his leadership and having confidence in him to do the right thing. + + Resident diplomatic missions + +Resident diplomatic missions of Canada in the United States + Washington, D.C. (Embassy) + Atlanta (Consulate-General) + Boston (Consulate-General) + Chicago (Consulate-General) + Dallas (Consulate-General) + Denver (Consulate-General) + Detroit (Consulate-General) + Los Angeles (Consulate-General) + Miami (Consulate-General) + Minneapolis (Consulate-General) + New York City (Consulate-General) + San Francisco (Consulate-General) + Seattle (Consulate-General) + Houston (Trade Office) + Palo Alto (Trade Office) + San Diego (Trade Office) + +Resident diplomatic missions of the United States in Canada + Ottawa (Embassy) + Calgary (Consulate-General) + Halifax (Consulate-General) + Montreal (Consulate-General) + Quebec City (Consulate-General) + Toronto (Consulate-General) + Vancouver (Consulate-General) + Winnipeg (Consulate) + + See also + + American Canadians + Canada–United States border + Canada–United States sports rivalries + Canadian Americans + Canadian nationalism, in which autonomy from and contrast with the United States is a major issue + Comparison of Canadian and American economies + Comparison of the Canadian and American healthcare systems + Foreign relations of Canada + Foreign relations of the United States + History of homeland security in the United States + North Atlantic triangle + Security and Prosperity Partnership of North America + United Kingdom–United States relations + List of ambassadors of Canada to the United States + List of ambassadors of the United States to Canada + + References + + Cited sources + + + Further reading + + + Azzi, Stephen. Reconcilable Differences: A History of Canada–US Relations (Oxford University Press, 2014) + Behiels, Michael D. and Reginald C. Stuart, eds. Transnationalism: Canada–United States History into the Twenty-First Century (McGill-Queen's University Press, 2010) 312 pp. online 2012 review + Bothwell, Robert. Your Country, My Country: A Unified History of the United States and Canada (2015), 400 pages; traces relations, shared values, and differences across the centuries + Boyko, John. Cold fire: Kennedy's northern front (Alfred A. Knopf Canada, 2016) + Congressional Research Service. Canada–U.S. Relations (Congressional Research Service, 2021) 2021 Report, by an agency of the U.S. Congress; Updated February 10, 2021 + Clarkson, Stephen. Uncle Sam and Us: Globalization, Neoconservatism and the Canadian State (University of Toronto Press, 2002) + Doran, Charles F., and James Patrick Sewell, "Anti-Americanism in Canada", Annals of the American Academy of Political and Social Science, Vol. 497, Anti-Americanism: Origins and Context (May 1988), pp. 105–119 in JSTOR + Dunning, William Archibald. The British Empire and the United States (1914) online celebratory study by leading American scholar. + Dyment, David "Doing the Continental: A New Canadian-American Relationship" (Dundurn Press, 2010) + Engler, Yves + Granatstein, J. L. Yankee Go Home: Canadians and Anti-Americanism (1997) + Granatstein, J. L. and Norman Hillmer, For Better or for Worse: Canada and the United States to the 1990s (1991) + Gravelle, Timothy B. "Partisanship, Border Proximity, and Canadian Attitudes toward North American Integration." International Journal of Public Opinion Research (2014) 26#4 pp: 453–474. + Gravelle, Timothy B. "Love Thy Neighbo (u) r? Political Attitudes, Proximity and the Mutual Perceptions of the Canadian and American Publics". Canadian Journal of Political Science (2014) 47#1 pp: 135–157. + Greaves, Wilfrid. "Democracy, Donald Trump, and the Canada-US Security Environment". (NAADSN – North American and Arctic Defense Security Network, 2020). online + + Hale, Geoffrey. So Near Yet So Far: The Public and Hidden Worlds of Canada-US Relations (University of British Columbia Press, 2012); 352 pages focus on 2001–2011 + Hillmer, Norman, and Philippe Lagassé, eds. Justin Trudeau and Canadian foreign policy (Springer, 2018) online. + Holland, Kenneth. "The Canada–United States defence relationship: a partnership for the twenty-first century". Canadian Foreign Policy Journal ahead-of-print (2015): 1–6. online + Holmes, Ken. "The Canadian Cognitive Bias and its Influence on Canada/US Relations". International Social Science Review (2015) 90#1 online. + Holmes, John W. "Canadian External Policies since 1945" "International Journal" 18#2 (1963) 137-147. https://doi.org/10.1177/002070206301800201 online + Holmes, John W. "Impact of Domestic Political Factors on Canadian-American Relations: Canada", International Organization, Vol. 28, No. 4, Canada and the United States: Transnational and Transgovernmental Relations (Autumn, 1974), pp. 611–635 in JSTOR + Innes, Hugh, ed. Americanization: Issues for the Seventies (McGraw-Hill Ryerson, 1972). ; re 1970s + Keenleyside, Hugh Ll. Canada and the United States (1929) online + Lennox, Patrick. At Home and Abroad: The Canada-U.S. Relationship and Canada's Place in the World (University of British Columbia Press; 2010) 192 pages; the post–World War II period. + Little, John Michael. "Canada Discovered: Continentalist Perceptions of the Roosevelt Administration, 1939–1945", PhD dissertation. Dissertation Abstracts International, 1978, Vol. 38 Issue 9, p5696-5697 + Lumsden, Ian, ed. The Americanization of Canada, ed. for the University League for Social Reform (U of Toronto Press, 1970). + McInnis, Edgard W. The Unguarded Frontier: A History of American-Canadian Relations (1942) online; well-regarded older study + MacKenzie, Scott A. "But There Was No War: The Impossibility of a United States Invasion of Canada after the Civil War" American Review of Canadian Studies (2017): online + McKercher, Asa. Camelot and Canada: Canadian-American Relations in the Kennedy Era (Oxford UP, 2016). xii, 298 pp. 1960-1963. + Molloy, Patricia. Canada/US and Other Unfriendly Relations: Before and After 9/11 (Palgrave Macmillan; 2012) 192 pages; essays on various "myths" + Mount, Graeme S. and Edelgard Mahant. Invisible and Inaudible in Washington: American Policies toward Canada during the Cold War (1999) + Mount, Graeme S. and Edelgard Mahant. ''''An Introduction to Canadian-American Relations (2nd ed.1989) + Myers, Phillip E. Dissolving Tensions: Rapprochement and Resolution in British-American-Canadian Relations in the Treaty of Washington Era, 1865–1914 (Kent State UP, 2015). x, 326 pp. + Pacheco, Daniela Pereira. "Politics on Twitter: a comparison between Donald Trump and Justin Trudeau". (ICSCP 2020). online + Paltiel, Jeremy. "Canada's middle-power ambivalence: The palimpsest of US power under the Chinese shadow". in America's Allies and the Decline of US Hegemony (Routledge, 2019) pp. 126–140. + Pederson, William D. ed. A Companion to Franklin D. Roosevelt (2011) pp 517–41, covers FDR's policies + + Stoett, Peter J. "Fairweather Friends? Canada–United States Environmental Relations in the Days of Trump and the Era of Climate Change". in Canada–US Relations (Palgrave Macmillan, Cham, 2019) pp. 105–123. + Stuart, Reginald C. Dispersed Relations: Americans and Canadians in Upper North America (2007) excerpt and text search + Tagg, James. "'And, We Burned down the White House, Too': American History, Canadian Undergraduates, and Nationalism", The History Teacher, 37#3 (May 2004), pp. 309–334 in JSTOR + Tansill, C. C. Canadian-American Relations, 1875–1911 (1943) + Thompson, John Herd, and Stephen J. Randall. Canada and the United States: Ambivalent Allies (4th ed. McGill-Queen's UP, 2008), 387pp, the standard scholarly survey + Wrong, Hume, and John W. Holmes. "The Canada–United States Relationship 1927/1951". International Journal 31#3 (1976): 529–45. The Canada–United States Relationship 1927/1951 online + +Trade and tariffs + Ciuriak, Dan, How U.S. Trade Policy Has Changed Under President Donald Trump – Perceptions From Canada (SSRN, March 29, 2019). online or How U.S. Trade Policy Has Changed Under President Donald Trump – Perceptions From Canada + Georges, Patrick. "Canada's Trade Policy Options under Donald Trump: NAFTA's rules of origin, Canada US security perimeter, and Canada's geographical trade diversification opportunities". (Working Paper #1707E Department of Economics, University of Ottawa, 2017). online + Grey, Earl. The Commercial Policy of the British Colonies and the McKinley Tariff (London: Macmillan, 1892). online + Lawder, Robert H. Commerce between the United States & Canada, Observations on Reciprocity and the McKinley Tariff (Toronto: Monetary Times Printing, 1892). online + Muirhead, Bruce. "From Special Relationship to Third Option: Canada, the U.S., and the Nixon Shock", American Review of Canadian Studies, Vol. 34, 2004 + Palen, Marc-William. "Protection, federation and union: The global impact of the McKinley tariff upon the British Empire, 1890–94". Journal of Imperial and Commonwealth History 38.3 (2010): 395–418 online. + Rioux, Hubert. "Canada First vs. America First: Economic Nationalism and the Evolution of Canada–US Trade Relations". European Review of International Studies 6.3 (2019): 30–56. online + +Primary sources + Gallagher, Connell. "The Senator George D. Aiken Papers: Sources for the Study of Canadian-American Relations, 1930–1974". Archivaria 1#21 (1985) pp. 176–79 online. + + + Riddell, Walter A. ed. Documents on Canadian Foreign Policy, 1917–1939 Oxford University Press, 1962 806 pages of documents + +External links + History of Canada – U.S. relations + Canadian Embassy in Washington, D.C. + U.S. Embassy & Consulates in Canada + Canadian Association of New York + Canada and the United States, by Stephen Azzi and J.L. Granatstein + Canadian-American Relations, by John English + A New North American Neighborhood: The Alaskan Boundary Question and Canadian American Relations, 1898–1913 Manuscript at Dartmouth College Library + + +United States +Bilateral relations of the United States +Christianity () is an Abrahamic monotheistic religion based on the life and teachings of Jesus of Nazareth. It is the world's largest and most widespread religion with roughly 2.4 billion followers representing one-third of the global population. Its adherents, known as Christians, are estimated to make up a majority of the population in 157 countries and territories. They believe that Jesus is the Son of God, whose coming as the Messiah was prophesied in the Hebrew Bible (called the Old Testament in Christianity) and chronicled in the New Testament. + +Christianity remains culturally diverse in its Western and Eastern branches, and doctrinally diverse concerning justification and the nature of salvation, ecclesiology, ordination, and Christology. The creeds of various Christian denominations generally hold in common Jesus as the Son of God—the Logos incarnated—who ministered, suffered, and died on a cross, but rose from the dead for the salvation of humankind; and referred to as the gospel, meaning the "good news". The four canonical gospels of Matthew, Mark, Luke and John describe Jesus's life and teachings, with the Old Testament as the gospels' respected background. + +Christianity began in the 1st century after the birth of Jesus as a Judaic sect with Hellenistic influence, in the Roman province of Judea. The disciples of Jesus spread their faith around the Eastern Mediterranean area, despite significant persecution. The inclusion of Gentiles led Christianity to slowly separate from Judaism (2nd century). Emperor Constantine the Great decriminalized Christianity in the Roman Empire by the Edict of Milan (313), later convening the Council of Nicaea (325) where Early Christianity was consolidated into what would become the State church of the Roman Empire (380). The Church of the East and Oriental Orthodoxy both split over differences in Christology (5th century), while the Eastern Orthodox Church and the Catholic Church separated in the East–West Schism (1054). Protestantism split into numerous denominations from the Catholic Church in the Reformation era (16th century). Following the Age of Discovery (15th–17th century), Christianity expanded throughout the world via missionary work, extensive trade and colonialism. Christianity played a prominent role in the development of Western civilization, particularly in Europe from late antiquity and the Middle Ages. + +The six major branches of Christianity are Roman Catholicism (1.3 billion people), Protestantism (800 million), Eastern Orthodoxy (220 million), Oriental Orthodoxy (60 million), Restorationism (35 million), and the Church of the East (600 thousand). Smaller church communities number in the thousands despite efforts toward unity (ecumenism). In the West, Christianity remains the dominant religion even with a decline in adherence, with about 70% of that population identifying as Christian. Christianity is growing in Africa and Asia, the world's most populous continents. Christians remain greatly persecuted in many regions of the world, particularly in the Middle East, North Africa, East Asia, and South Asia. + +Etymology +Early Jewish Christians referred to themselves as 'The Way' (), probably coming from Isaiah 40:3, "prepare the way of the Lord". According to Acts 11:26, the term "Christian" (, ), meaning "followers of Christ" in reference to Jesus's disciples, was first used in the city of Antioch by the non-Jewish inhabitants there. The earliest recorded use of the term "Christianity/Christianism" (, ) was by Ignatius of Antioch around 100 AD. + +Beliefs +While Christians worldwide share basic convictions, there are differences of interpretations and opinions of the Bible and sacred traditions on which Christianity is based. + +Creeds + +Concise doctrinal statements or confessions of religious beliefs are known as creeds. They began as baptismal formulae and were later expanded during the Christological controversies of the 4th and 5th centuries to become statements of faith. "Jesus is Lord" is the earliest creed of Christianity and continues to be used, as with the World Council of Churches. + +The Apostles' Creed is the most widely accepted statement of the articles of Christian faith. It is used by a number of Christian denominations for both liturgical and catechetical purposes, most visibly by liturgical churches of Western Christian tradition, including the Latin Church of the Catholic Church, Lutheranism, Anglicanism, and Western Rite Orthodoxy. It is also used by Presbyterians, Methodists, and Congregationalists. + +This particular creed was developed between the 2nd and 9th centuries. Its central doctrines are those of the Trinity and God the Creator. Each of the doctrines found in this creed can be traced to statements current in the apostolic period. The creed was apparently used as a summary of Christian doctrine for baptismal candidates in the churches of Rome. Its points include: + Belief in God the Father, Jesus Christ as the Son of God, and the Holy Spirit + The death, descent into hell, resurrection and ascension of Christ + The holiness of the Church and the communion of saints + Christ's second coming, the Day of Judgement and salvation of the faithful + +The Nicene Creed was formulated, largely in response to Arianism, at the Councils of Nicaea and Constantinople in 325 and 381 respectively, and ratified as the universal creed of Christendom by the First Council of Ephesus in 431. + +The Chalcedonian Definition, or Creed of Chalcedon, developed at the Council of Chalcedon in 451, though rejected by the Oriental Orthodox, taught Christ "to be acknowledged in two natures, inconfusedly, unchangeably, indivisibly, inseparably": one divine and one human, and that both natures, while perfect in themselves, are nevertheless also perfectly united into one person. + +The Athanasian Creed, received in the Western Church as having the same status as the Nicene and Chalcedonian, says: "We worship one God in Trinity, and Trinity in Unity; neither confounding the Persons nor dividing the Substance". + +Most Christians (Catholic, Eastern Orthodox, Oriental Orthodox, and Protestant alike) accept the use of creeds and subscribe to at least one of the creeds mentioned above. + +Certain Evangelical Protestants, though not all of them, reject creeds as definitive statements of faith, even while agreeing with some or all of the substance of the creeds. Also rejecting creeds are groups with roots in the Restoration Movement, such as the Christian Church (Disciples of Christ), the Evangelical Christian Church in Canada, and the Churches of Christ. + +Jesus + +The central tenet of Christianity is the belief in Jesus as the Son of God and the Messiah (Christ). Christians believe that Jesus, as the Messiah, was anointed by God as savior of humanity and hold that Jesus's coming was the fulfillment of messianic prophecies of the Old Testament. The Christian concept of messiah differs significantly from the contemporary Jewish concept. The core Christian belief is that through belief in and acceptance of the death and resurrection of Jesus, sinful humans can be reconciled to God, and thereby are offered salvation and the promise of eternal life. + +While there have been many theological disputes over the nature of Jesus over the earliest centuries of Christian history, generally, Christians believe that Jesus is God incarnate and "true God and true man" (or both fully divine and fully human). Jesus, having become fully human, suffered the pains and temptations of a mortal man, but did not sin. As fully God, he rose to life again. According to the New Testament, he rose from the dead, ascended to heaven, is seated at the right hand of the Father, and will ultimately return to fulfill the rest of the Messianic prophecy, including the resurrection of the dead, the Last Judgment, and the final establishment of the Kingdom of God. + +According to the canonical gospels of Matthew and Luke, Jesus was conceived by the Holy Spirit and born from the Virgin Mary. Little of Jesus's childhood is recorded in the canonical gospels, although infancy gospels were popular in antiquity. In comparison, his adulthood, especially the week before his death, is well documented in the gospels contained within the New Testament, because that part of his life is believed to be most important. The biblical accounts of Jesus's ministry include: his baptism, miracles, preaching, teaching, and deeds. + +Death and resurrection + +Christians consider the resurrection of Jesus to be the cornerstone of their faith (see 1 Corinthians 15) and the most important event in history. Among Christian beliefs, the death and resurrection of Jesus are two core events on which much of Christian doctrine and theology is based. According to the New Testament, Jesus was crucified, died a physical death, was buried within a tomb, and rose from the dead three days later. + +The New Testament mentions several post-resurrection appearances of Jesus on different occasions to his twelve apostles and disciples, including "more than five hundred brethren at once", before Jesus's ascension to heaven. Jesus's death and resurrection are commemorated by Christians in all worship services, with special emphasis during Holy Week, which includes Good Friday and Easter Sunday. + +The death and resurrection of Jesus are usually considered the most important events in Christian theology, partly because they demonstrate that Jesus has power over life and death and therefore has the authority and power to give people eternal life. + +Christian churches accept and teach the New Testament account of the resurrection of Jesus with very few exceptions. Some modern scholars use the belief of Jesus's followers in the resurrection as a point of departure for establishing the continuity of the historical Jesus and the proclamation of the early church. Some liberal Christians do not accept a literal bodily resurrection, seeing the story as richly symbolic and spiritually nourishing myth. Arguments over death and resurrection claims occur at many religious debates and interfaith dialogues. Paul the Apostle, an early Christian convert and missionary, wrote, "If Christ was not raised, then all our preaching is useless, and your trust in God is useless". + +Salvation + +Paul the Apostle, like Jews and Roman pagans of his time, believed that sacrifice can bring about new kinship ties, purity, and eternal life. For Paul, the necessary sacrifice was the death of Jesus: Gentiles who are "Christ's" are, like Israel, descendants of Abraham and "heirs according to the promise" The God who raised Jesus from the dead would also give new life to the "mortal bodies" of Gentile Christians, who had become with Israel, the "children of God", and were therefore no longer "in the flesh". + +Modern Christian churches tend to be much more concerned with how humanity can be saved from a universal condition of sin and death than the question of how both Jews and Gentiles can be in God's family. According to Eastern Orthodox theology, based upon their understanding of the atonement as put forward by Irenaeus' recapitulation theory, Jesus' death is a ransom. This restores the relation with God, who is loving and reaches out to humanity, and offers the possibility of theosis c.q. divinization, becoming the kind of humans God wants humanity to be. According to Catholic doctrine, Jesus' death satisfies the wrath of God, aroused by the offense to God's honor caused by human's sinfulness. The Catholic Church teaches that salvation does not occur without faithfulness on the part of Christians; converts must live in accordance with principles of love and ordinarily must be baptized. In Protestant theology, Jesus' death is regarded as a substitutionary penalty carried by Jesus, for the debt that has to be paid by humankind when it broke God's moral law. + +Christians differ in their views on the extent to which individuals' salvation is pre-ordained by God. Reformed theology places distinctive emphasis on grace by teaching that individuals are completely incapable of self-redemption, but that sanctifying grace is irresistible. In contrast Catholics, Orthodox Christians, and Arminian Protestants believe that the exercise of free will is necessary to have faith in Jesus. + +Trinity + +Trinity refers to the teaching that the one God comprises three distinct, eternally co-existing persons: the Father, the Son (incarnate in Jesus Christ) and the Holy Spirit. Together, these three persons are sometimes called the Godhead, although there is no single term in use in Scripture to denote the unified Godhead. In the words of the Athanasian Creed, an early statement of Christian belief, "the Father is God, the Son is God, and the Holy Spirit is God, and yet there are not three Gods but one God". They are distinct from another: the Father has no source, the Son is begotten of the Father, and the Spirit proceeds from the Father. Though distinct, the three persons cannot be divided from one another in being or in operation. While some Christians also believe that God appeared as the Father in the Old Testament, it is agreed that he appeared as the Son in the New Testament and will still continue to manifest as the Holy Spirit in the present. But still, God still existed as three persons in each of these times. However, traditionally there is a belief that it was the Son who appeared in the Old Testament because, for example, when the Trinity is depicted in art, the Son typically has the distinctive appearance, a cruciform halo identifying Christ, and in depictions of the Garden of Eden, this looks forward to an Incarnation yet to occur. In some Early Christian sarcophagi, the Logos is distinguished with a beard, "which allows him to appear ancient, even pre-existent". + +The Trinity is an essential doctrine of mainstream Christianity. From earlier than the times of the Nicene Creed (325) Christianity advocated the triune mystery-nature of God as a normative profession of faith. According to Roger E. Olson and Christopher Hall, through prayer, meditation, study and practice, the Christian community concluded "that God must exist as both a unity and trinity", codifying this in ecumenical council at the end of the 4th century. + +According to this doctrine, God is not divided in the sense that each person has a third of the whole; rather, each person is considered to be fully God (see Perichoresis). The distinction lies in their relations, the Father being unbegotten; the Son being begotten of the Father; and the Holy Spirit proceeding from the Father and (in Western Christian theology) from the Son. Regardless of this apparent difference, the three "persons" are each eternal and omnipotent. Other Christian religions including Unitarian Universalism, Jehovah's Witnesses, and Mormonism, do not share those views on the Trinity. + +The Greek word trias is first seen in this sense in the works of Theophilus of Antioch; his text reads: "of the Trinity, of God, and of His Word, and of His Wisdom". The term may have been in use before this time; its Latin equivalent, trinitas, appears afterwards with an explicit reference to the Father, the Son, and the Holy Spirit, in Tertullian. In the following century, the word was in general use. It is found in many passages of Origen. + +Trinitarianism + +Trinitarianism denotes Christians who believe in the concept of the Trinity. Almost all Christian denominations and churches hold Trinitarian beliefs. Although the words "Trinity" and "Triune" do not appear in the Bible, beginning in the 3rd century theologians developed the term and concept to facilitate apprehension of the New Testament teachings of God as being Father, Son, and Holy Spirit. Since that time, Christian theologians have been careful to emphasize that Trinity does not imply that there are three gods (the antitrinitarian heresy of Tritheism), nor that each hypostasis of the Trinity is one-third of an infinite God (partialism), nor that the Son and the Holy Spirit are beings created by and subordinate to the Father (Arianism). Rather, the Trinity is defined as one God in three persons. + +Nontrinitarianism + +Nontrinitarianism (or antitrinitarianism) refers to theology that rejects the doctrine of the Trinity. Various nontrinitarian views, such as adoptionism or modalism, existed in early Christianity, leading to disputes about Christology. Nontrinitarianism reappeared in the Gnosticism of the Cathars between the 11th and 13th centuries, among groups with Unitarian theology in the Protestant Reformation of the 16th century, in the 18th-century Enlightenment, among Restorationist groups arising during the Second Great Awakening of the 19th century, and most recently, in Oneness Pentecostal churches. + +Eschatology + +The end of things, whether the end of an individual life, the end of the age, or the end of the world, broadly speaking, is Christian eschatology; the study of the destiny of humans as it is revealed in the Bible. The major issues in Christian eschatology are the Tribulation, death and the afterlife, (mainly for Evangelical groups) the Millennium and the following Rapture, the Second Coming of Jesus, Resurrection of the Dead, Heaven, (for liturgical branches) Purgatory, and Hell, the Last Judgment, the end of the world, and the New Heavens and New Earth. + +Christians believe that the second coming of Christ will occur at the end of time, after a period of severe persecution (the Great Tribulation). All who have died will be resurrected bodily from the dead for the Last Judgment. Jesus will fully establish the Kingdom of God in fulfillment of scriptural prophecies. + +Death and afterlife +Most Christians believe that human beings experience divine judgment and are rewarded either with eternal life or eternal damnation. This includes the general judgement at the resurrection of the dead as well as the belief (held by Catholics, Orthodox and most Protestants) in a judgment particular to the individual soul upon physical death. + +In the Catholic branch of Christianity, those who die in a state of grace, i.e., without any mortal sin separating them from God, but are still imperfectly purified from the effects of sin, undergo purification through the intermediate state of purgatory to achieve the holiness necessary for entrance into God's presence. Those who have attained this goal are called saints (Latin sanctus, "holy"). + +Some Christian groups, such as Seventh-day Adventists, hold to mortalism, the belief that the human soul is not naturally immortal, and is unconscious during the intermediate state between bodily death and resurrection. These Christians also hold to Annihilationism, the belief that subsequent to the final judgement, the wicked will cease to exist rather than suffer everlasting torment. Jehovah's Witnesses hold to a similar view. + +Practices + +Depending on the specific denomination of Christianity, practices may include baptism, the Eucharist (Holy Communion or the Lord's Supper), prayer (including the Lord's Prayer), confession, confirmation, burial rites, marriage rites and the religious education of children. Most denominations have ordained clergy who lead regular communal worship services. + +Christian rites, rituals, and ceremonies are not celebrated in one single sacred language. Many ritualistic Christian churches make a distinction between sacred language, liturgical language and vernacular language. The three important languages in the early Christian era were: Latin, Greek and Syriac. + +Communal worship +Services of worship typically follow a pattern or form known as liturgy. Justin Martyr described 2nd-century Christian liturgy in his First Apology () to Emperor Antoninus Pius, and his description remains relevant to the basic structure of Christian liturgical worship: + +Thus, as Justin described, Christians assemble for communal worship typically on Sunday, the day of the resurrection, though other liturgical practices often occur outside this setting. Scripture readings are drawn from the Old and New Testaments, but especially the gospels. Instruction is given based on these readings, in the form of a sermon or homily. There are a variety of congregational prayers, including thanksgiving, confession, and intercession, which occur throughout the service and take a variety of forms including recited, responsive, silent, or sung. Psalms, hymns, worship songs, and other church music may be sung. Services can be varied for special events like significant feast days. + +Nearly all forms of worship incorporate the Eucharist, which consists of a meal. It is reenacted in accordance with Jesus' instruction at the Last Supper that his followers do in remembrance of him as when he gave his disciples bread, saying, "This is my body", and gave them wine saying, "This is my blood". In the early church, Christians and those yet to complete initiation would separate for the Eucharistic part of the service. Some denominations such as Confessional Lutheran churches continue to practice 'closed communion'. They offer communion to those who are already united in that denomination or sometimes individual church. Catholics further restrict participation to their members who are not in a state of mortal sin. Many other churches, such as Anglican Communion and the Methodist Churches (such as the Free Methodist Church and United Methodist Church), practice 'open communion' since they view communion as a means to unity, rather than an end, and invite all believing Christians to participate. + +Sacraments or ordinances + +In Christian belief and practice, a sacrament is a rite, instituted by Christ, that confers grace, constituting a sacred mystery. The term is derived from the Latin word sacramentum, which was used to translate the Greek word for mystery. Views concerning both which rites are sacramental, and what it means for an act to be a sacrament, vary among Christian denominations and traditions. + +The most conventional functional definition of a sacrament is that it is an outward sign, instituted by Christ, that conveys an inward, spiritual grace through Christ. The two most widely accepted sacraments are Baptism and the Eucharist; however, the majority of Christians also recognize five additional sacraments: Confirmation (Chrismation in the Eastern tradition), Holy Orders (or ordination), Penance (or Confession), Anointing of the Sick, and Matrimony (see Christian views on marriage). + +Taken together, these are the Seven Sacraments as recognized by churches in the High Church tradition—notably Catholic, Eastern Orthodox, Oriental Orthodox, Independent Catholic, Old Catholic, many Anglicans, and some Lutherans. Most other denominations and traditions typically affirm only Baptism and Eucharist as sacraments, while some Protestant groups, such as the Quakers, reject sacramental theology. Certain denominations of Christianity, such as Anabaptists, use the term "ordinances" to refer to rites instituted by Jesus for Christians to observe. Seven ordinances have been taught in many Conservative Mennonite Anabaptist churches, which include "baptism, communion, footwashing, marriage, anointing with oil, the holy kiss, and the prayer covering". + +In addition to this, the Church of the East has two additional sacraments in place of the traditional sacraments of Matrimony and the Anointing of the Sick. These include Holy Leaven (Melka) and the sign of the cross. + +Liturgical calendar + +Catholics, Eastern Christians, Lutherans, Anglicans and other traditional Protestant communities frame worship around the liturgical year. The liturgical cycle divides the year into a series of seasons, each with their theological emphases, and modes of prayer, which can be signified by different ways of decorating churches, colors of paraments and vestments for clergy, scriptural readings, themes for preaching and even different traditions and practices often observed personally or in the home. + +Western Christian liturgical calendars are based on the cycle of the Roman Rite of the Catholic Church, and Eastern Christians use analogous calendars based on the cycle of their respective rites. Calendars set aside holy days, such as solemnities which commemorate an event in the life of Jesus, Mary, or the saints, and periods of fasting, such as Lent and other pious events such as memoria, or lesser festivals commemorating saints. Christian groups that do not follow a liturgical tradition often retain certain celebrations, such as Christmas, Easter, and Pentecost: these are the celebrations of Christ's birth, resurrection, and the descent of the Holy Spirit upon the Church, respectively. A few denominations such as Quaker Christians make no use of a liturgical calendar. + +Symbols + +Most Christian denominations have not generally practiced aniconism, the avoidance or prohibition of devotional images, even if early Jewish Christians, invoking the Decalogue's prohibition of idolatry, avoided figures in their symbols. + +The cross, today one of the most widely recognized symbols, was used by Christians from the earliest times. Tertullian, in his book De Corona, tells how it was already a tradition for Christians to trace the sign of the cross on their foreheads. Although the cross was known to the early Christians, the crucifix did not appear in use until the 5th century. + +Among the earliest Christian symbols, that of the fish or Ichthys seems to have ranked first in importance, as seen on monumental sources such as tombs from the first decades of the 2nd century. Its popularity seemingly arose from the Greek word ichthys (fish) forming an acrostic for the Greek phrase Iesous Christos Theou Yios Soter (Ἰησοῦς Χριστός, Θεοῦ Υἱός, Σωτήρ), (Jesus Christ, Son of God, Savior), a concise summary of Christian faith. + +Other major Christian symbols include the chi-rho monogram, the dove and olive branch (symbolic of the Holy Spirit), the sacrificial lamb (representing Christ's sacrifice), the vine (symbolizing the connection of the Christian with Christ) and many others. These all derive from passages of the New Testament. + +Baptism + +Baptism is the ritual act, with the use of water, by which a person is admitted to membership of the Church. Beliefs on baptism vary among denominations. Differences occur firstly on whether the act has any spiritual significance. Some, such as the Catholic and Eastern Orthodox churches, as well as Lutherans and Anglicans, hold to the doctrine of baptismal regeneration, which affirms that baptism creates or strengthens a person's faith, and is intimately linked to salvation. Baptists and Plymouth Brethren view baptism as a purely symbolic act, an external public declaration of the inward change which has taken place in the person, but not as spiritually efficacious. Secondly, there are differences of opinion on the methodology (or mode) of the act. These modes are: by immersion; if immersion is total, by submersion; by affusion (pouring); and by aspersion (sprinkling). Those who hold the first view may also adhere to the tradition of infant baptism; the Orthodox Churches all practice infant baptism and always baptize by total immersion repeated three times in the name of the Father, the Son, and the Holy Spirit. The Lutheran Church and the Catholic Church also practice infant baptism, usually by affusion, and using the Trinitarian formula. Anabaptist Christians practice believer's baptism, in which an adult chooses to receive the ordinance after making a decision to follow Jesus. Anabaptist denominations such as the Mennonites, Amish and Hutterites use pouring as the mode to administer believer's baptism, whereas Anabaptists of the Schwarzenau Brethren and River Brethren traditions baptize by immersion. + +Prayer + +In the Gospel of Saint Matthew, Jesus taught the Lord's Prayer, which has been seen as a model for Christian prayer. The injunction for Christians to pray the Lord's prayer thrice daily was given in the Didache and came to be recited by Christians at 9 am, 12 pm, and 3 pm. + +In the second century Apostolic Tradition, Hippolytus instructed Christians to pray at seven fixed prayer times: "on rising, at the lighting of the evening lamp, at bedtime, at midnight" and "the third, sixth and ninth hours of the day, being hours associated with Christ's Passion". Prayer positions, including kneeling, standing, and prostrations have been used for these seven fixed prayer times since the days of the early Church. Breviaries such as the Shehimo and Agpeya are used by Oriental Orthodox Christians to pray these canonical hours while facing in the eastward direction of prayer. + +The Apostolic Tradition directed that the sign of the cross be used by Christians during the minor exorcism of baptism, during ablutions before praying at fixed prayer times, and in times of temptation. + +Intercessory prayer is prayer offered for the benefit of other people. There are many intercessory prayers recorded in the Bible, including prayers of the Apostle Peter on behalf of sick persons and by prophets of the Old Testament in favor of other people. In the Epistle of James, no distinction is made between the intercessory prayer offered by ordinary believers and the prominent Old Testament prophet Elijah. The effectiveness of prayer in Christianity derives from the power of God rather than the status of the one praying. + +The ancient church, in both Eastern and Western Christianity, developed a tradition of asking for the intercession of (deceased) saints, and this remains the practice of most Eastern Orthodox, Oriental Orthodox, Catholic, and some Lutheran and Anglican churches. Apart from certain sectors within the latter two denominations, other Churches of the Protestant Reformation, however, rejected prayer to the saints, largely on the basis of the sole mediatorship of Christ. The reformer Huldrych Zwingli admitted that he had offered prayers to the saints until his reading of the Bible convinced him that this was idolatrous. + +According to the Catechism of the Catholic Church: "Prayer is the raising of one's mind and heart to God or the requesting of good things from God". The Book of Common Prayer in the Anglican tradition is a guide which provides a set order for services, containing set prayers, scripture readings, and hymns or sung Psalms. Frequently in Western Christianity, when praying, the hands are placed palms together and forward as in the feudal commendation ceremony. At other times the older orans posture may be used, with palms up and elbows in. + +Scriptures + +Christianity, like other religions, has adherents whose beliefs and biblical interpretations vary. Christianity regards the biblical canon, the Old Testament and the New Testament, as the inspired word of God. The traditional view of inspiration is that God worked through human authors so that what they produced was what God wished to communicate. The Greek word referring to inspiration in is theopneustos, which literally means "God-breathed". + +Some believe that divine inspiration makes present Bibles inerrant. Others claim inerrancy for the Bible in its original manuscripts, although none of those are extant. Still others maintain that only a particular translation is inerrant, such as the King James Version. Another closely related view is biblical infallibility or limited inerrancy, which affirms that the Bible is free of error as a guide to salvation, but may include errors on matters such as history, geography, or science. + +The canon of the Old Testament accepted by Protestant churches, which is only the Tanakh (the canon of the Hebrew Bible), is shorter than that accepted by the Orthodox and Catholic churches which also include the deuterocanonical books which appear in the Septuagint, the Orthodox canon being slightly larger than the Catholic; Protestants regard the latter as apocryphal, important historical documents which help to inform the understanding of words, grammar, and syntax used in the historical period of their conception. Some versions of the Bible include a separate Apocrypha section between the Old Testament and the New Testament. The New Testament, originally written in Koine Greek, contains 27 books which are agreed upon by all major churches. + +Some denominations have additional canonical holy scriptures beyond the Bible, including the standard works of the Latter Day Saints movement and Divine Principle in the Unification Church. + +Catholic interpretation + +In antiquity, two schools of exegesis developed in Alexandria and Antioch. The Alexandrian interpretation, exemplified by Origen, tended to read Scripture allegorically, while the Antiochene interpretation adhered to the literal sense, holding that other meanings (called theoria) could only be accepted if based on the literal meaning. + +Catholic theology distinguishes two senses of scripture: the literal and the spiritual. + +The literal sense of understanding scripture is the meaning conveyed by the words of Scripture. The spiritual sense is further subdivided into: + The allegorical sense, which includes typology. An example would be the parting of the Red Sea being understood as a "type" (sign) of baptism. + The moral sense, which understands the scripture to contain some ethical teaching. + The anagogical sense, which applies to eschatology, eternity and the consummation of the world. + +Regarding exegesis, following the rules of sound interpretation, Catholic theology holds: + The injunction that all other senses of sacred scripture are based on the literal + That the historicity of the Gospels must be absolutely and constantly held + That scripture must be read within the "living Tradition of the whole Church" and + That "the task of interpretation has been entrusted to the bishops in communion with the successor of Peter, the Bishop of Rome". + +Protestant interpretation + +Qualities of Scripture +Many Protestant Christians, such as Lutherans and the Reformed, believe in the doctrine of sola scriptura—that the Bible is a self-sufficient revelation, the final authority on all Christian doctrine, and revealed all truth necessary for salvation; other Protestant Christians, such as Methodists and Anglicans, affirm the doctrine of prima scriptura which teaches that Scripture is the primary source for Christian doctrine, but that "tradition, experience, and reason" can nurture the Christian religion as long as they are in harmony with the Bible. Protestants characteristically believe that ordinary believers may reach an adequate understanding of Scripture because Scripture itself is clear in its meaning (or "perspicuous"). Martin Luther believed that without God's help, Scripture would be "enveloped in darkness". He advocated for "one definite and simple understanding of Scripture". John Calvin wrote, "all who refuse not to follow the Holy Spirit as their guide, find in the Scripture a clear light". Related to this is "efficacy", that Scripture is able to lead people to faith; and "sufficiency", that the Scriptures contain everything that one needs to know to obtain salvation and to live a Christian life. + +Original intended meaning of Scripture +Protestants stress the meaning conveyed by the words of Scripture, the historical-grammatical method. The historical-grammatical method or grammatico-historical method is an effort in Biblical hermeneutics to find the intended original meaning in the text. This original intended meaning of the text is drawn out through examination of the passage in light of the grammatical and syntactical aspects, the historical background, the literary genre, as well as theological (canonical) considerations. The historical-grammatical method distinguishes between the one original meaning and the significance of the text. The significance of the text includes the ensuing use of the text or application. The original passage is seen as having only a single meaning or sense. As Milton S. Terry said: "A fundamental principle in grammatico-historical exposition is that the words and sentences can have but one significance in one and the same connection. The moment we neglect this principle we drift out upon a sea of uncertainty and conjecture". Technically speaking, the grammatical-historical method of interpretation is distinct from the determination of the passage's significance in light of that interpretation. Taken together, both define the term (Biblical) hermeneutics. +Some Protestant interpreters make use of typology. + +History + +Early Christianity + +Apostolic Age + +Christianity developed during the 1st century AD as a Jewish Christian sect with Hellenistic influence of Second Temple Judaism. An early Jewish Christian community was founded in Jerusalem under the leadership of the Pillars of the Church, namely James the Just, the brother of Jesus, Peter, and John. + +Jewish Christianity soon attracted Gentile God-fearers, posing a problem for its Jewish religious outlook, which insisted on close observance of the Jewish commandments. Paul the Apostle solved this by insisting that salvation by faith in Christ, and participation in his death and resurrection by their baptism, sufficed. At first he persecuted the early Christians, but after a conversion experience he preached to the gentiles, and is regarded as having had a formative effect on the emerging Christian identity as separate from Judaism. Eventually, his departure from Jewish customs would result in the establishment of Christianity as an independent religion. + +Ante-Nicene period + +This formative period was followed by the early bishops, whom Christians consider the successors of Christ's apostles. From the year 150, Christian teachers began to produce theological and apologetic works aimed at defending the faith. These authors are known as the Church Fathers, and the study of them is called patristics. Notable early Fathers include Ignatius of Antioch, Polycarp, Justin Martyr, Irenaeus, Tertullian, Clement of Alexandria and Origen. + +Persecution of Christians occurred intermittently and on a small scale by both Jewish and Roman authorities, with Roman action starting at the time of the Great Fire of Rome in 64 AD. Examples of early executions under Jewish authority reported in the New Testament include the deaths of Saint Stephen and James, son of Zebedee. The Decian persecution was the first empire-wide conflict, when the edict of Decius in 250 AD required everyone in the Roman Empire (except Jews) to perform a sacrifice to the Roman gods. The Diocletianic Persecution beginning in 303 AD was also particularly severe. Roman persecution ended in 313 AD with the Edict of Milan. + +While Proto-orthodox Christianity was becoming dominant, heterodox sects also existed at the same time, which held radically different beliefs. Gnostic Christianity developed a duotheistic doctrine based on illusion and enlightenment rather than forgiveness of sin. With only a few scriptures overlapping with the developing orthodox canon, most Gnostic texts and Gnostic gospels were eventually considered heretical and suppressed by mainstream Christians. A gradual splitting off of Gentile Christianity left Jewish Christians continuing to follow the Law of Moses, including practices such as circumcision. By the fifth century, they and the Jewish–Christian gospels would be largely suppressed by the dominant sects in both Judaism and Christianity. + +Spread and acceptance in Roman Empire + +Christianity spread to Aramaic-speaking peoples along the Mediterranean coast and also to the inland parts of the Roman Empire and beyond that into the Parthian Empire and the later Sasanian Empire, including Mesopotamia, which was dominated at different times and to varying extents by these empires. The presence of Christianity in Africa began in the middle of the 1st century in Egypt and by the end of the 2nd century in the region around Carthage. Mark the Evangelist is claimed to have started the Church of Alexandria in about 43 AD; various later churches claim this as their own legacy, including the Coptic Orthodox Church. Important Africans who influenced the early development of Christianity include Tertullian, Clement of Alexandria, Origen of Alexandria, Cyprian, Athanasius, and Augustine of Hippo. + +King Tiridates III made Christianity the state religion in Armenia between 301 and 314, thus Armenia became the first officially Christian state. It was not an entirely new religion in Armenia, having penetrated into the country from at least the third century, but it may have been present even earlier. + +Constantine I was exposed to Christianity in his youth, and throughout his life his support for the religion grew, culminating in baptism on his deathbed. During his reign, state-sanctioned persecution of Christians was ended with the Edict of Toleration in 311 and the Edict of Milan in 313. At that point, Christianity was still a minority belief, comprising perhaps only 5% of the Roman population. Influenced by his adviser Mardonius, Constantine's nephew Julian unsuccessfully tried to suppress Christianity. On 27 February 380, Theodosius I, Gratian, and Valentinian II established Nicene Christianity as the State church of the Roman Empire. As soon as it became connected to the state, Christianity grew wealthy; the Church solicited donations from the rich and could now own land. + +Constantine was also instrumental in the convocation of the First Council of Nicaea in 325, which sought to address Arianism and formulated the Nicene Creed, which is still used by in Catholicism, Eastern Orthodoxy, Lutheranism, Anglicanism, and many other Protestant churches. Nicaea was the first of a series of ecumenical councils, which formally defined critical elements of the theology of the Church, notably concerning Christology. The Church of the East did not accept the third and following ecumenical councils and is still separate today by its successors (Assyrian Church of the East). + +In terms of prosperity and cultural life, the Byzantine Empire was one of the peaks in Christian history and Christian civilization, and Constantinople remained the leading city of the Christian world in size, wealth, and culture. There was a renewed interest in classical Greek philosophy, as well as an increase in literary output in vernacular Greek. Byzantine art and literature held a preeminent place in Europe, and the cultural impact of Byzantine art on the West during this period was enormous and of long-lasting significance. The later rise of Islam in North Africa reduced the size and numbers of Christian congregations, leaving in large numbers only the Coptic Church in Egypt, the Ethiopian Orthodox Tewahedo Church in the Horn of Africa and the Nubian Church in the Sudan (Nobatia, Makuria and Alodia). + +Middle Ages + +Early Middle Ages + +With the decline and fall of the Roman Empire in the West, the papacy became a political player, first visible in Pope Leo's diplomatic dealings with Huns and Vandals. The church also entered into a long period of missionary activity and expansion among the various tribes. While Arianists instituted the death penalty for practicing pagans (see the Massacre of Verden, for example), what would later become Catholicism also spread among the Hungarians, the Germanic, the Celtic, the Baltic and some Slavic peoples. + +Around 500, Christianity was thoroughly integrated into Byzantine and Kingdom of Italy culture and Benedict of Nursia set out his Monastic Rule, establishing a system of regulations for the foundation and running of monasteries. Monasticism became a powerful force throughout Europe, and gave rise to many early centers of learning, most famously in Ireland, Scotland, and Gaul, contributing to the Carolingian Renaissance of the 9th century. + +In the 7th century, Muslims conquered Syria (including Jerusalem), North Africa, and Spain, converting some of the Christian population to Islam, and placing the rest under a separate legal status. Part of the Muslims' success was due to the exhaustion of the Byzantine Empire in its decades long conflict with Persia. Beginning in the 8th century, with the rise of Carolingian leaders, the Papacy sought greater political support in the Frankish Kingdom. + +The Middle Ages brought about major changes within the church. Pope Gregory the Great dramatically reformed the ecclesiastical structure and administration. In the early 8th century, iconoclasm became a divisive issue, when it was sponsored by the Byzantine emperors. The Second Ecumenical Council of Nicaea (787) finally pronounced in favor of icons. In the early 10th century, Western Christian monasticism was further rejuvenated through the leadership of the great Benedictine monastery of Cluny. + +High and Late Middle Ages + +In the West, from the 11th century onward, some older cathedral schools became universities (see, for example, University of Oxford, University of Paris and University of Bologna). Previously, higher education had been the domain of Christian cathedral schools or monastic schools (Scholae monasticae), led by monks and nuns. Evidence of such schools dates back to the 6th century AD. These new universities expanded the curriculum to include academic programs for clerics, lawyers, civil servants, and physicians. The university is generally regarded as an institution that has its origin in the Medieval Christian setting. + +Accompanying the rise of the "new towns" throughout Europe, mendicant orders were founded, bringing the consecrated religious life out of the monastery and into the new urban setting. The two principal mendicant movements were the Franciscans and the Dominicans, founded by Francis of Assisi and Dominic, respectively. Both orders made significant contributions to the development of the great universities of Europe. Another new order was the Cistercians, whose large, isolated monasteries spearheaded the settlement of former wilderness areas. In this period, church building and ecclesiastical architecture reached new heights, culminating in the orders of Romanesque and Gothic architecture and the building of the great European cathedrals. + +Christian nationalism emerged during this era in which Christians felt the impulse to recover lands in which Christianity had historically flourished. From 1095 under the pontificate of Urban II, the First Crusade was launched. These were a series of military campaigns in the Holy Land and elsewhere, initiated in response to pleas from the Byzantine Emperor Alexios I for aid against Turkish expansion. The Crusades ultimately failed to stifle Islamic aggression and even contributed to Christian enmity with the sacking of Constantinople during the Fourth Crusade. + +The Christian Church experienced internal conflict between the 7th and 13th centuries that resulted in a schism between the Latin Church of Western Christianity branch, the now-Catholic Church, and an Eastern, largely Greek, branch (the Eastern Orthodox Church). The two sides disagreed on a number of administrative, liturgical and doctrinal issues, most prominently Eastern Orthodox opposition to papal supremacy. The Second Council of Lyon (1274) and the Council of Florence (1439) attempted to reunite the churches, but in both cases, the Eastern Orthodox refused to implement the decisions, and the two principal churches remain in schism to the present day. However, the Catholic Church has achieved union with various smaller eastern churches. + +In the thirteenth century, a new emphasis on Jesus' suffering, exemplified by the Franciscans' preaching, had the consequence of turning worshippers' attention towards Jews, on whom Christians had placed the blame for Jesus' death. Christianity's limited tolerance of Jews was not new—Augustine of Hippo said that Jews should not be allowed to enjoy the citizenship that Christians took for granted—but the growing antipathy towards Jews was a factor that led to the expulsion of Jews from England in 1290, the first of many such expulsions in Europe. + +Beginning around 1184, following the crusade against Cathar heresy, various institutions, broadly referred to as the Inquisition, were established with the aim of suppressing heresy and securing religious and doctrinal unity within Christianity through conversion and prosecution. + +Modern era + +Protestant Reformation and Counter-Reformation + +The 15th-century Renaissance brought about a renewed interest in ancient and classical learning. During the Reformation, Martin Luther posted the Ninety-five Theses 1517 against the sale of indulgences. Printed copies soon spread throughout Europe. In 1521 the Edict of Worms condemned and excommunicated Luther and his followers, resulting in the schism of the Western Christendom into several branches. + +Other reformers like Zwingli, Oecolampadius, Calvin, Knox, and Arminius further criticized Catholic teaching and worship. These challenges developed into the movement called Protestantism, which repudiated the primacy of the pope, the role of tradition, the seven sacraments, and other doctrines and practices. The Reformation in England began in 1534, when King Henry VIII had himself declared head of the Church of England. Beginning in 1536, the monasteries throughout England, Wales and Ireland were dissolved. + +Thomas Müntzer, Andreas Karlstadt and other theologians perceived both the Catholic Church and the confessions of the Magisterial Reformation as corrupted. Their activity brought about the Radical Reformation, which gave birth to various Anabaptist denominations. + +Partly in response to the Protestant Reformation, the Catholic Church engaged in a substantial process of reform and renewal, known as the Counter-Reformation or Catholic Reform. The Council of Trent clarified and reasserted Catholic doctrine. During the following centuries, competition between Catholicism and Protestantism became deeply entangled with political struggles among European states. + +Meanwhile, the discovery of America by Christopher Columbus in 1492 brought about a new wave of missionary activity. Partly from missionary zeal, but under the impetus of colonial expansion by the European powers, Christianity spread to the Americas, Oceania, East Asia and sub-Saharan Africa. + +Throughout Europe, the division caused by the Reformation led to outbreaks of religious violence and the establishment of separate state churches in Europe. Lutheranism spread into the northern, central, and eastern parts of present-day Germany, Livonia, and Scandinavia. Anglicanism was established in England in 1534. Calvinism and its varieties, such as Presbyterianism, were introduced in Scotland, the Netherlands, Hungary, Switzerland, and France. Arminianism gained followers in the Netherlands and Frisia. Ultimately, these differences led to the outbreak of conflicts in which religion played a key factor. The Thirty Years' War, the English Civil War, and the French Wars of Religion are prominent examples. These events intensified the Christian debate on persecution and toleration. + +In the revival of neoplatonism Renaissance humanists did not reject Christianity; quite the contrary, many of the greatest works of the Renaissance were devoted to it, and the Catholic Church patronized many works of Renaissance art. Much, if not most, of the new art was commissioned by or in dedication to the Church. Some scholars and historians attribute Christianity to having contributed to the rise of the Scientific Revolution. Many well-known historical figures who influenced Western science considered themselves Christian such as Nicolaus Copernicus, Galileo Galilei, Johannes Kepler, Isaac Newton and Robert Boyle. + +Post-Enlightenment + +In the era known as the Great Divergence, when in the West, the Age of Enlightenment and the scientific revolution brought about great societal changes, Christianity was confronted with various forms of skepticism and with certain modern political ideologies, such as versions of socialism and liberalism. Events ranged from mere anti-clericalism to violent outbursts against Christianity, such as the dechristianization of France during the French Revolution, the Spanish Civil War, and certain Marxist movements, especially the Russian Revolution and the persecution of Christians in the Soviet Union under state atheism. + +Especially pressing in Europe was the formation of nation states after the Napoleonic era. In all European countries, different Christian denominations found themselves in competition to greater or lesser extents with each other and with the state. Variables were the relative sizes of the denominations and the religious, political, and ideological orientation of the states. Urs Altermatt of the University of Fribourg, looking specifically at Catholicism in Europe, identifies four models for the European nations. In traditionally Catholic-majority countries such as Belgium, Spain, and Austria, to some extent, religious and national communities are more or less identical. Cultural symbiosis and separation are found in Poland, the Republic of Ireland, and Switzerland, all countries with competing denominations. Competition is found in Germany, the Netherlands, and again Switzerland, all countries with minority Catholic populations, which to a greater or lesser extent identified with the nation. Finally, separation between religion (again, specifically Catholicism) and the state is found to a great degree in France and Italy, countries where the state actively opposed itself to the authority of the Catholic Church. + +The combined factors of the formation of nation states and ultramontanism, especially in Germany and the Netherlands, but also in England to a much lesser extent, often forced Catholic churches, organizations, and believers to choose between the national demands of the state and the authority of the Church, specifically the papacy. This conflict came to a head in the First Vatican Council, and in Germany would lead directly to the Kulturkampf. + +Christian commitment in Europe dropped as modernity and secularism came into their own, particularly in the Czech Republic and Estonia, while religious commitments in America have been generally high in comparison to Europe. Changes in worldwide Christianity over the last century have been significant, since 1900, Christianity has spread rapidly in the Global South and Third World countries. The late 20th century has shown the shift of Christian adherence to the Third World and the Southern Hemisphere in general, with the West no longer the chief standard bearer of Christianity. Approximately 7 to 10% of Arabs are Christians, most prevalent in Egypt, Syria and Lebanon. + +Demographics + +With around 2.4 billion adherents according to a 2020 estimation by Pew Research Center, split into three main branches of Catholic, Protestant, and Eastern Orthodox, Christianity is the world's largest religion. High birth rates and conversions in the global South were cited as the reasons for the Christian population growth. The Christian share of the world's population has stood at around 33% for the last hundred years, which means that one in three persons on Earth are Christians. This masks a major shift in the demographics of Christianity; large increases in the developing world have been accompanied by substantial declines in the developed world, mainly in Western Europe and North America. According to a 2015 Pew Research Center study, within the next four decades, Christianity will remain the largest religion; and by 2050, the Christian population is expected to exceed 3 billion. + +According to some scholars, Christianity ranks at first place in net gains through religious conversion. As a percentage of Christians, the Catholic Church and Orthodoxy (both Eastern and Oriental) are declining in some parts of the world (though Catholicism is growing in Asia, in Africa, vibrant in Eastern Europe, etc.), while Protestants and other Christians are on the rise in the developing world. The so-called popular Protestantism is one of the fastest growing religious categories in the world. Nevertheless, Catholicism will also continue to grow to 1.63 billion by 2050, according to Todd Johnson of the Center for the Study of Global Christianity. Africa alone, by 2015, will be home to 230 million African Catholics. And if in 2018, the U.N. projects that Africa's population will reach 4.5 billion by 2100 (not 2 billion as predicted in 2004), Catholicism will indeed grow, as will other religious groups. According to Pew Research Center, Africa is expected to be home to 1.1 billion African Christians by 2050. + +In 2010, 87% of the world's Christian population lived in countries where Christians are in the majority, while 13% of the world's Christian population lived in countries where Christians are in the minority. Christianity is the predominant religion in Europe, the Americas, Oceania, and Sub-Saharan Africa. There are also large Christian communities in other parts of the world, such as Central Asia, the Middle East and North Africa, East Asia, Southeast Asia, and the Indian subcontinent. In Asia, it is the dominant religion in Armenia, Cyprus, Georgia, East Timor, and the Philippines. However, it is declining in some areas including the northern and western United States, some areas in Oceania (Australia and New Zealand), northern Europe (including Great Britain, Scandinavia and other places), France, Germany, and the Canadian provinces of Ontario, British Columbia, and Quebec, and some parts of Asia (especially the Middle East, due to the Christian emigration, and Macau). + +The Christian population is not decreasing in Brazil, the southern United States, and the province of Alberta, Canada, but the percentage is decreasing. Since the fall of communism, the proportion of Christians has been stable or even increased in the Central and Eastern European countries. Christianity is growing rapidly in both numbers and percentage in China, other Asian countries, Sub-Saharan Africa, Latin America, Eastern Europe, North Africa (Maghreb), Gulf Cooperation Council countries, and Oceania. + +Despite a decline in adherence in the West, Christianity remains the dominant religion in the region, with about 70% of that population identifying as Christian. Christianity remains the largest religion in Western Europe, where 71% of Western Europeans identified themselves as Christian in 2018. A 2011 Pew Research Center survey found that 76% of Europeans, 73% in Oceania and about 86% in the Americas (90% in Latin America and 77% in North America) identified themselves as Christians. By 2010 about 157 countries and territories in the world had Christian majorities. + +There are many charismatic movements that have become well established over large parts of the world, especially Africa, Latin America, and Asia. Since 1900, primarily due to conversion, Protestantism has spread rapidly in Africa, Asia, Oceania, and Latin America. From 1960 to 2000, the global growth of the number of reported Evangelical Protestants grew three times the world's population rate, and twice that of Islam. According to the historian Geoffrey Blainey from the University of Melbourne, since the 1960s there has been a substantial increase in the number of conversions from Islam to Christianity, mostly to the Evangelical and Pentecostal forms. +A study conducted by St. Mary's University estimated about 10.2 million Muslim converts to Christianity in 2015; according to the study significant numbers of Muslim converts to Christianity can be found in Afghanistan, Azerbaijan, Central Asia (including Kazakhstan, Kyrgyzstan, and other countries), Indonesia, Malaysia, the Middle East (including Iran, Saudi Arabia, Turkey, and other countries), North Africa (including Algeria, Morocco, and Tunisia), Sub-Saharan Africa, and the Western World (including Albania, Belgium, France, Germany, Kosovo, the Netherlands, Russia, Scandinavia, United Kingdom, the United States, and other western countries). It is also reported that Christianity is popular among people of different backgrounds in Africa and Asia; according to a report by the Singapore Management University, more people in Southeast Asia are converting to Christianity, many of them young and having a university degree. According to scholar Juliette Koning and Heidi Dahles of there is a "rapid expansion" of Christianity in Singapore, China, Hong Kong, Taiwan, Indonesia, Malaysia, and South Korea. According to scholar Terence Chong from the Institute of Southeast Asian Studies, since the 1980s Christianity is expanding in China, Singapore, Indonesia, Japan, Malaysia, Taiwan, South Korea, and Vietnam. + +In most countries in the developed world, church attendance among people who continue to identify themselves as Christians has been falling over the last few decades. Some sources view this as part of a drift away from traditional membership institutions, while others link it to signs of a decline in belief in the importance of religion in general. Europe's Christian population, though in decline, still constitutes the largest geographical component of the religion. According to data from the 2012 European Social Survey, around a third of European Christians say they attend services once a month or more. Conversely, according to the World Values Survey, about more than two-thirds of Latin American Christians, and about 90% of African Christians (in Ghana, Nigeria, Rwanda, South Africa and Zimbabwe) said they attended church regularly. According to a 2018 study by the Pew Research Center, Christians in Africa and Latin America and the United States have high levels of commitment to their faith. + +Christianity, in one form or another, is the sole state religion of the following nations: Argentina (Catholic), Costa Rica (Catholic), the Kingdom of Denmark (Lutheran), England (Anglican), Greece (Greek Orthodox), Iceland (Lutheran), Liechtenstein (Catholic), Malta (Catholic), Monaco (Catholic), Norway (Lutheran), Samoa, Tonga (Methodist), Tuvalu (Reformed), and Vatican City (Catholic). + +There are numerous other countries, such as Cyprus, which although do not have an established church, still give official recognition and support to a specific Christian denomination. + +Churches and denominations + +Christianity can be taxonomically divided into six main groups: Roman Catholicism, Protestantism, Oriental Orthodoxy, Eastern Orthodoxy, the Church of the East, and Restorationism. A broader distinction that is sometimes drawn is between Eastern Christianity and Western Christianity, which has its origins in the East–West Schism (Great Schism) of the 11th century. Recently, neither Western nor Eastern World Christianity has also stood out, for example, in African-initiated churches. However, there are other present and historical Christian groups that do not fit neatly into one of these primary categories. + +There is a diversity of doctrines and liturgical practices among groups calling themselves Christian. These groups may vary ecclesiologically in their views on a classification of Christian denominations. The Nicene Creed (325), however, is typically accepted as authoritative by most Christians, including the Catholic, Eastern Orthodox, Oriental Orthodox, and major Protestant, such as Lutheran and Anglican denominations. + +Catholic Church + +The Catholic Church consists of those particular Churches, headed by bishops, in communion with the pope, the bishop of Rome, as its highest authority in matters of faith, morality, and church governance. Like Eastern Orthodoxy, the Catholic Church, through apostolic succession, traces its origins to the Christian community founded by Jesus Christ. Catholics maintain that the "one, holy, catholic, and apostolic church" founded by Jesus subsists fully in the Catholic Church, but also acknowledges other Christian churches and communities and works towards reconciliation among all Christians. The Catholic faith is detailed in the Catechism of the Catholic Church. + +Of its seven sacraments, the Eucharist is the principal one, celebrated liturgically in the Mass. The church teaches that through consecration by a priest, the sacrificial bread and wine become the body and blood of Christ. The Virgin Mary is venerated in the Catholic Church as Mother of God and Queen of Heaven, honoured in dogmas and devotions. Its teaching includes Divine Mercy, sanctification through faith and evangelization of the Gospel as well as Catholic social teaching, which emphasises voluntary support for the sick, the poor, and the afflicted through the corporal and spiritual works of mercy. The Catholic Church operates thousands of Catholic schools, universities, hospitals, and orphanages around the world, and is the largest non-government provider of education and health care in the world. Among its other social services are numerous charitable and humanitarian organizations. + +Canon law () is the system of laws and legal principles made and enforced by the hierarchical authorities of the Catholic Church to regulate its external organisation and government and to order and direct the activities of Catholics toward the mission of the church. The canon law of the Latin Church was the first modern Western legal system, and is the oldest continuously functioning legal system in the West. while the distinctive traditions of Eastern Catholic canon law govern the 23 Eastern Catholic particular churches sui iuris. + +As the world's oldest and largest continuously functioning international institution, it has played a prominent role in the history and development of Western civilization. The 2,834 sees are grouped into 24 particular autonomous Churches (the largest of which being the Latin Church), each with its own distinct traditions regarding the liturgy and the administering of sacraments. With more than 1.1 billion baptized members, the Catholic Church is the largest Christian church and represents 50.1% of all Christians as well as 16.7% of the world's population. Catholics live all over the world through missions, diaspora, and conversions. + +Eastern Orthodox Church + +The Eastern Orthodox Church consists of those churches in communion with the patriarchal sees of the East, such as the Ecumenical Patriarch of Constantinople. Like the Catholic Church, the Eastern Orthodox Church also traces its heritage to the foundation of Christianity through apostolic succession and has an episcopal structure, though the autonomy of its component parts is emphasized, and most of them are national churches. + +Eastern Orthodox theology is based on holy tradition which incorporates the dogmatic decrees of the seven Ecumenical Councils, the Scriptures, and the teaching of the Church Fathers. The church teaches that it is the one, holy, catholic and apostolic church established by Jesus Christ in his Great Commission, and that its bishops are the successors of Christ's apostles. It maintains that it practises the original Christian faith, as passed down by holy tradition. Its patriarchates, reminiscent of the pentarchy, and other autocephalous and autonomous churches reflect a variety of hierarchical organisation. It recognises seven major sacraments, of which the Eucharist is the principal one, celebrated liturgically in synaxis. The church teaches that through consecration invoked by a priest, the sacrificial bread and wine become the body and blood of Christ. The Virgin Mary is venerated in the Eastern Orthodox Church as the God-bearer, honoured in devotions. + +Eastern Orthodoxy is the second largest single denomination in Christianity, with an estimated 230 million adherents, although Protestants collectively outnumber them, substantially. As one of the oldest surviving religious institutions in the world, the Eastern Orthodox Church has played a prominent role in the history and culture of Eastern and Southeastern Europe, the Caucasus, and the Near East. The majority of Eastern Orthodox Christians live mainly in Southeast and Eastern Europe, Cyprus, Georgia, and parts of the Caucasus region, Siberia, and the Russian Far East. Over half of Eastern Orthodox Christians follow the Russian Orthodox Church, while the vast majority live within Russia. There are also communities in the former Byzantine regions of Africa, the Eastern Mediterranean, and in the Middle East. Eastern Orthodox communities are also present in many other parts of the world, particularly North America, Western Europe, and Australia, formed through diaspora, conversions, and missionary activity. + +Oriental Orthodoxy + +The Oriental Orthodox Churches (also called "Old Oriental" churches) are those eastern churches that recognize the first three ecumenical councils—Nicaea, Constantinople, and Ephesus—but reject the dogmatic definitions of the Council of Chalcedon and instead espouse a Miaphysite christology. + +The Oriental Orthodox communion consists of six groups: Syriac Orthodox, Coptic Orthodox, Ethiopian Orthodox, Eritrean Orthodox, Malankara Orthodox Syrian Church (India), and Armenian Apostolic churches. These six churches, while being in communion with each other, are completely independent hierarchically. These churches are generally not in communion with the Eastern Orthodox Church, with whom they are in dialogue for erecting a communion. Together, they have about 62 million members worldwide. + +As some of the oldest religious institutions in the world, the Oriental Orthodox Churches have played a prominent role in the history and culture of Armenia, Egypt, Turkey, Eritrea, Ethiopia, Sudan and parts of the Middle East and India. An Eastern Christian body of autocephalous churches, its bishops are equal by virtue of episcopal ordination, and its doctrines can be summarized in that the churches recognize the validity of only the first three ecumenical councils. + +Some Oriental Orthodox Churches such as the Coptic Orthodox, Ethiopian Orthodox, Eritrean Orthodox, places a heavier emphasis on Old Testament teachings than one might find in other Christian denominations, and its followers adhere to certain practices: following dietary rules that are similar to Jewish Kashrut, require that their male members undergo circumcision, and observes ritual purification. + +Church of the East + +The Church of the East, which was part of the Great Church, shared communion with those in the Roman Empire until the Council of Ephesus condemned Nestorius in 431. Continuing as a dhimmi community under the Sunni Caliphate after the Muslim conquest of Persia (633–654), the Church of the East played a major role in the history of Christianity in Asia. Between the 9th and 14th centuries, it represented the world's largest Christian denomination in terms of geographical extent. It established dioceses and communities stretching from the Mediterranean Sea and today's Iraq and Iran, to India (the Saint Thomas Syrian Christians of Kerala), the Mongol kingdoms in Central Asia, and China during the Tang dynasty (7th–9th centuries). In the 13th and 14th centuries, the church experienced a final period of expansion under the Mongol Empire, where influential Church of the East clergy sat in the Mongol court. + +The Assyrian Church of the East, with an unbroken patriarchate established in the 17th century, is an independent Eastern Christian denomination which claims continuity from the Church of the East—in parallel to the Catholic patriarchate established in the 16th century that evolved into the Chaldean Catholic Church, an Eastern Catholic church in full communion with the Pope. It is an Eastern Christian church that follows the traditional christology and ecclesiology of the historical Church of the East. Largely aniconic and not in communion with any other church, it belongs to the eastern branch of Syriac Christianity, and uses the East Syriac Rite in its liturgy. + +Its main spoken language is Syriac, a dialect of Eastern Aramaic, and the majority of its adherents are ethnic Assyrians, mostly living in Iran, Iraq, Syria, Turkey, India (Chaldean Syrian Church), and in the Assyrian diaspora. It is officially headquartered in the city of Erbil in northern Iraqi Kurdistan, and its original area also spreads into south-eastern Turkey and north-western Iran, corresponding to ancient Assyria. Its hierarchy is composed of metropolitan bishops and diocesan bishops, while lower clergy consists of priests and deacons, who serve in dioceses (eparchies) and parishes throughout the Middle East, India, North America, Oceania, and Europe (including the Caucasus and Russia). + +The Ancient Church of the East distinguished itself from the Assyrian Church of the East in 1964. It is one of the Assyrian churches that claim continuity with the historical Church of the East, one of the oldest Christian churches in Mesopotamia. It is officially headquartered in the city of Baghdad, Iraq. The majority of its adherents are ethnic Assyrians. + +Protestantism + +In 1521, the Edict of Worms condemned Martin Luther and officially banned citizens of the Holy Roman Empire from defending or propagating his ideas. This split within the Roman Catholic church is now called the Reformation. Prominent Reformers included Martin Luther, Huldrych Zwingli, and John Calvin. The 1529 Protestation at Speyer against being excommunicated gave this party the name Protestantism. Luther's primary theological heirs are known as Lutherans. Zwingli and Calvin's heirs are far broader denominationally and are referred to as the Reformed tradition. Protestants have developed their own culture, with major contributions in education, the humanities and sciences, the political and social order, the economy and the arts, and many other fields. + +The Anglican churches descended from the Church of England and organized in the Anglican Communion. Some, but not all Anglicans consider themselves both Protestant and Catholic. + +Since the Anglican, Lutheran, and the Reformed branches of Protestantism originated for the most part in cooperation with the government, these movements are termed the "Magisterial Reformation". On the other hand, groups such as the Anabaptists, who often do not consider themselves to be Protestant, originated in the Radical Reformation, which though sometimes protected under Acts of Toleration, do not trace their history back to any state church. They are further distinguished by their rejection of infant baptism; they believe in baptism only of adult believers—credobaptism (Anabaptists include the Amish, Apostolic, Bruderhof, Mennonites, Hutterites, River Brethren and Schwarzenau Brethren groups.) + +The term Protestant also refers to any churches which formed later, with either the Magisterial or Radical traditions. In the 18th century, for example, Methodism grew out of Anglican minister John Wesley's evangelical revival movement. Several Pentecostal and non-denominational churches, which emphasize the cleansing power of the Holy Spirit, in turn grew out of Methodism. Because Methodists, Pentecostals and other evangelicals stress "accepting Jesus as your personal Lord and Savior", which comes from Wesley's emphasis of the New Birth, they often refer to themselves as being born-again. + +Protestantism is the second largest major group of Christians after Catholicism by number of followers, although the Eastern Orthodox Church is larger than any single Protestant denomination. Estimates vary, mainly over the question of which denominations to classify as Protestant. Yet, the total number of Protestant Christians is generally estimated between 800 million and 1 billion, corresponding to nearly 40% of the world's Christians. The majority of Protestants are members of just a handful of denominational families, i.e. Adventists, Anglicans, Baptists, Reformed (Calvinists), Lutherans, Methodists, Moravians/Hussites, and Pentecostals. Nondenominational, evangelical, charismatic, neo-charismatic, independent, and other churches are on the rise, and constitute a significant part of Protestant Christianity. + +Some groups of individuals who hold basic Protestant tenets identify themselves as "Christians" or "born-again Christians". They typically distance themselves from the confessionalism and creedalism of other Christian communities by calling themselves "non-denominational" or "evangelical". Often founded by individual pastors, they have little affiliation with historic denominations. + +Restorationism + +The Second Great Awakening, a period of religious revival that occurred in the United States during the early 1800s, saw the development of a number of unrelated churches. They generally saw themselves as restoring the original church of Jesus Christ rather than reforming one of the existing churches. A common belief held by Restorationists was that the other divisions of Christianity had introduced doctrinal defects into Christianity, which was known as the Great Apostasy. In Asia, is a known restorationist religion that was established during the early 1900s. + +Some of the churches originating during this period are historically connected to early 19th-century camp meetings in the Midwest and upstate New York. One of the largest churches produced from the movement is the Church of Jesus Christ of Latter-day Saints. American Millennialism and Adventism, which arose from Evangelical Protestantism, influenced the Jehovah's Witnesses movement and, as a reaction specifically to William Miller, the Seventh-day Adventists. Others, including the Christian Church (Disciples of Christ), Evangelical Christian Church in Canada, Churches of Christ, and the Christian churches and churches of Christ, have their roots in the contemporaneous Stone-Campbell Restoration Movement, which was centered in Kentucky and Tennessee. Other groups originating in this time period include the Christadelphians and the previously mentioned Latter Day Saints movement. While the churches originating in the Second Great Awakening have some superficial similarities, their doctrine and practices vary significantly. + +Other + +Within Italy, Poland, Lithuania, Transylvania, Hungary, Romania, and the United Kingdom, Unitarian Churches emerged from the Reformed tradition in the 16th century; the Unitarian Church of Transylvania is an example of such a denomination that arose in this era. They adopted the Anabaptist doctrine of credobaptism. + +Various smaller Independent Catholic communities, such as the Old Catholic Church, include the word Catholic in their title, and arguably have more or less liturgical practices in common with the Catholic Church but are no longer in full communion with the Holy See. + +Spiritual Christians, such as the Doukhobors and Molokans, broke from the Russian Orthodox Church and maintain close association with Mennonites and Quakers due to similar religious practices; all of these groups are furthermore collectively considered to be peace churches due to their belief in pacifism. + +Messianic Judaism (or the Messianic Movement) is the name of a Christian movement comprising a number of streams, whose members may consider themselves Jewish. The movement originated in the 1960s and 1970s, and it blends elements of religious Jewish practice with evangelical Christianity. Messianic Judaism affirms Christian creeds such as the messiahship and divinity of "Yeshua" (the Hebrew name of Jesus) and the Triune Nature of God, while also adhering to some Jewish dietary laws and customs. + +Esoteric Christians, such as The Christian Community, regard Christianity as a mystery religion and profess the existence and possession of certain esoteric doctrines or practices, hidden from the public and accessible only to a narrow circle of "enlightened", "initiated", or highly educated people. + +Nondenominational Christianity or non-denominational Christianity consists of churches which typically distance themselves from the confessionalism or creedalism of other Christian communities by not formally aligning with a specific Christian denomination. Nondenominational Christianity first arose in the 18th century through the Stone-Campbell Restoration Movement, with followers organizing themselves as "Christians" and "Disciples of Christ", but many typically adhere to evangelical Christianity. + +Cultural influence + +The history of the Christendom spans about 1,700 years and includes a variety of socio-political developments, as well as advances in the arts, architecture, literature, science, philosophy, and technology. Since the spread of Christianity from the Levant to Europe and North Africa during the early Roman Empire, Christendom has been divided in the pre-existing Greek East and Latin West. Consequently, different versions of the Christian cultures arose with their own rites and practices, centred around the cities of Rome (Western Christianity) and Carthage, whose communities were called Western or Latin Christendom, and Constantinople (Eastern Christianity), Antioch (Syriac Christianity), Kerala (Indian Christianity) and Alexandria (Coptic Christianity), whose communities were called Eastern or Oriental Christendom. The Byzantine Empire was one of the peaks in Christian history and Eastern Christian civilization. From the 11th to 13th centuries, Latin Christendom rose to the central role of the Western world. + +The Bible has had a profound influence on Western civilization and on cultures around the globe; it has contributed to the formation of Western law, art, texts, and education. With a literary tradition spanning two millennia, the Bible is one of the most influential works ever written. From practices of personal hygiene to philosophy and ethics, the Bible has directly and indirectly influenced politics and law, war and peace, sexual morals, marriage and family life, toilet etiquette, letters and learning, the arts, economics, social justice, medical care and more. + +Christians have made a myriad of contributions to human progress in a broad and diverse range of fields, including philosophy, science and technology, medicine, fine arts and architecture, politics, literatures, music, and business. According to 100 Years of Nobel Prizes a review of the Nobel Prizes award between 1901 and 2000 reveals that (65.4%) of Nobel Prizes Laureates, have identified Christianity in its various forms as their religious preference. + +Outside the Western world, Christianity has had an influence on various cultures, such as in Africa, the Near East, Middle East, East Asia, Southeast Asia, and the Indian subcontinent. Eastern Christian scientists and scholars of the medieval Islamic world (particularly Jacobite and Nestorian Christians) contributed to the Arab Islamic civilization during the reign of the Ummayyads and the Abbasids, by translating works of Greek philosophers to Syriac and afterwards, to Arabic. They also excelled in philosophy, science, theology, and medicine. Scholars and intellectuals agree Christians in the Middle East have made significant contributions to Arab and Islamic civilization since the introduction of Islam, and they have had a significant impact contributing the culture of the Mashriq, Turkey, and Iran. + +Influence on Western culture +Western culture, throughout most of its history, has been nearly equivalent to Christian culture, and a large portion of the population of the Western Hemisphere can be described as practicing or nominal Christians. The notion of "Europe" and the "Western World" has been intimately connected with the concept of "Christianity and Christendom". Many historians even attribute Christianity for being the link that created a unified European identity. + +Though Western culture contained several polytheistic religions during its early years under the Greek and Roman Empires, as the centralized Roman power waned, the dominance of the Catholic Church was the only consistent force in Western Europe. Until the Age of Enlightenment, Christian culture guided the course of philosophy, literature, art, music and science. Christian disciplines of the respective arts have subsequently developed into Christian philosophy, Christian art, Christian music, Christian literature, and so on. + +Christianity has had a significant impact on education, as the church created the bases of the Western system of education, and was the sponsor of founding universities in the Western world, as the university is generally regarded as an institution that has its origin in the Medieval Christian setting. Historically, Christianity has often been a patron of science and medicine; many Catholic clergy, Jesuits in particular, have been active in the sciences throughout history and have made significant contributions to the development of science. Some scholars state that Christianity contributed to the rise of the Scientific Revolution. Protestantism also has had an important influence on science. According to the Merton Thesis, there was a positive correlation between the rise of English Puritanism and German Pietism on the one hand, and early experimental science on the other. +The civilizing influence of Christianity includes social welfare, contribution to the medical and health care, founding hospitals, economics (as the Protestant work ethic), architecture, literature, personal hygiene (ablution), and family life. Historically, extended families were the basic family unit in the Christian culture and countries. + +Cultural Christians are secular people with a Christian heritage who may not believe in the religious claims of Christianity, but who retain an affinity for the popular culture, art, music, and so on related to the religion. + +Postchristianity is the term for the decline of Christianity, particularly in Europe, Canada, Australia, and to a minor degree the Southern Cone, in the 20th and 21st centuries, considered in terms of postmodernism. It refers to the loss of Christianity's monopoly on values and world view in historically Christian societies. + +Ecumenism + +Christian groups and denominations have long expressed ideals of being reconciled, and in the 20th century, Christian ecumenism advanced in two ways. One way was greater cooperation between groups, such as the World Evangelical Alliance founded in 1846 in London or the Edinburgh Missionary Conference of Protestants in 1910, the Justice, Peace and Creation Commission of the World Council of Churches founded in 1948 by Protestant and Orthodox churches, and similar national councils like the National Council of Churches in Australia, which includes Catholics. + +The other way was an institutional union with united churches, a practice that can be traced back to unions between Lutherans and Calvinists in early 19th-century Germany. Congregationalist, Methodist, and Presbyterian churches united in 1925 to form the United Church of Canada, and in 1977 to form the Uniting Church in Australia. The Church of South India was formed in 1947 by the union of Anglican, Baptist, Methodist, Congregationalist, and Presbyterian churches. + +The Christian Flag is an ecumenical flag designed in the early 20th century to represent all of Christianity and Christendom. + +The ecumenical, monastic Taizé Community is notable for being composed of more than one hundred brothers from Protestant and Catholic traditions. The community emphasizes the reconciliation of all denominations and its main church, located in Taizé, Saône-et-Loire, France, is named the "Church of Reconciliation". The community is internationally known, attracting over 100,000 young pilgrims annually. + +Steps towards reconciliation on a global level were taken in 1965 by the Catholic and Orthodox churches, mutually revoking the excommunications that marked their Great Schism in 1054; the Anglican Catholic International Commission (ARCIC) working towards full communion between those churches since 1970; and some Lutheran and Catholic churches signing the Joint Declaration on the Doctrine of Justification in 1999 to address conflicts at the root of the Protestant Reformation. In 2006, the World Methodist Council, representing all Methodist denominations, adopted the declaration. + +Criticism, persecution, and apologetics + +Criticism + +Criticism of Christianity and Christians goes back to the Apostolic Age, with the New Testament recording friction between the followers of Jesus and the Pharisees and scribes (e.g., and ). In the 2nd century, Christianity was criticized by the Jews on various grounds, e.g., that the prophecies of the Hebrew Bible could not have been fulfilled by Jesus, given that he did not have a successful life. Additionally, a sacrifice to remove sins in advance, for everyone or as a human being, did not fit the Jewish sacrifice ritual; furthermore, God in Judaism is said to judge people on their deeds instead of their beliefs. One of the first comprehensive attacks on Christianity came from the Greek philosopher Celsus, who wrote The True Word, a polemic criticizing Christians as being unprofitable members of society. In response, the church father Origen published his treatise Contra Celsum, or Against Celsus, a seminal work of Christian apologetics, which systematically addressed Celsus's criticisms and helped bring Christianity a level of academic respectability. + +By the 3rd century, criticism of Christianity had mounted. Wild rumors about Christians were widely circulated, claiming that they were atheists and that, as part of their rituals, they devoured human infants and engaged in incestuous orgies. The Neoplatonist philosopher Porphyry wrote the fifteen-volume Adversus Christianos as a comprehensive attack on Christianity, in part building on the teachings of Plotinus. + +By the 12th century, the Mishneh Torah (i.e., Rabbi Moses Maimonides) was criticizing Christianity on the grounds of idol worship, in that Christians attributed divinity to Jesus, who had a physical body. In the 19th century, Nietzsche began to write a series of polemics on the "unnatural" teachings of Christianity (e.g. sexual abstinence), and continued his criticism of Christianity to the end of his life. In the 20th century, the philosopher Bertrand Russell expressed his criticism of Christianity in Why I Am Not a Christian, formulating his rejection of Christianity in the setting of logical arguments. + +Criticism of Christianity continues to date, e.g. Jewish and Muslim theologians criticize the doctrine of the Trinity held by most Christians, stating that this doctrine in effect assumes that there are three gods, running against the basic tenet of monotheism. New Testament scholar Robert M. Price has outlined the possibility that some Bible stories are based partly on myth in The Christ Myth Theory and its problems. + +Persecution + +Christians are one of the most persecuted religious groups in the world, especially in the Middle-East, North Africa and South and East Asia. In 2017, Open Doors estimated approximately 260 million Christians are subjected annually to "high, very high, or extreme persecution" with North Korea considered the most hazardous nation for Christians. In 2019, a report commissioned by the United Kingdom's Secretary of State of the Foreign and Commonwealth Office (FCO) to investigate global persecution of Christians found persecution has increased, and is highest in the Middle East, North Africa, India, China, North Korea, and Latin America, among others, and that it is global and not limited to Islamic states. This investigation found that approximately 80% of persecuted believers worldwide are Christians. + +Apologetics +Christian apologetics aims to present a rational basis for Christianity. The word "apologetic" (Greek: ἀπολογητικός apologētikos) comes from the Greek verb ἀπολογέομαι apologeomai, meaning "(I) speak in defense of". Christian apologetics has taken many forms over the centuries, starting with Paul the Apostle. The philosopher Thomas Aquinas presented five arguments for God's existence in the Summa Theologica, while his Summa contra Gentiles was a major apologetic work. Another famous apologist, G. K. Chesterton, wrote in the early twentieth century about the benefits of religion and, specifically, Christianity. Famous for his use of paradox, Chesterton explained that while Christianity had the most mysteries, it was the most practical religion. He pointed to the advance of Christian civilizations as proof of its practicality. The physicist and priest John Polkinghorne, in his Questions of Truth, discusses the subject of religion and science, a topic that other Christian apologists such as Ravi Zacharias, John Lennox, and William Lane Craig have engaged, with the latter two men opining that the inflationary Big Bang model is evidence for the existence of God. Creationist apologetics is apologetics that aims to defend creationism. + +See also + + Outline of Christianity + Christian atheism + Christianity and Islam + Christianity and Judaism + Christianity and politics + Christian mythology + Christianisation + One true church + Prophets of Christianity + +Notes + +References + +Bibliography + + Bahnsen, Greg. A Reformed Confession Regarding Hermeneutics (article 6) . + Ball, Bryan; Johnsson, William (ed.). The Essential Jesus. Pacific Press (2002). . + Barrett, David; Kurian, Tom and others. (ed.). World Christian Encyclopedia. Oxford University Press (2001). + Barry, John F. One Faith, One Lord: A Study of Basic Catholic Belief. William H. Sadlier (2001). + Benton, John. Is Christianity True? Darlington, Eng.: Evangelical Press (1988). + Bettenson, Henry (ed.). Documents of the Christian Church. Oxford University Press (1943). + + + + Chambers, Mortimer; Crew, Herlihy, Rabb, Woloch. The Western Experience. Volume II: The Early Modern Period. Alfred A. Knopf (1974). . + Coffey, John. Persecution and Toleration in Protestant England 1558–1689. Pearson Education (2000). + Cross, F.L.; Livingstone, E.A. (ed.). The Oxford Dictionary of the Christian Church. Oxford University Press (1997). . + Deppermann, Klaus. Melchior Hoffman: Social Unrest and Apocalyptic Vision in the Age of Reformation. . + Dilasser, Maurice. The Symbols of the Church. Collegeville, MN: Liturgical Press (1999). + Duffy, Eamon. Saints and Sinners, a History of the Popes. Yale University Press (1997). + + Esler, Philip F. The Early Christian World. Routledge (2004). + Farrar, F.W. Mercy and Judgment. A Few Last Words On Christian Eschatology With Reference to Dr. Pusey's, "What Is Of Faith?". Macmillan, London/New York (1904). + Ferguson, Sinclair; Wright, David, eds. New Dictionary of Theology. consulting ed. Packer, James. Leicester: Inter-Varsity Press (1988). + Foutz, Scott. Martin Luther and Scripture. + Fowler, Jeaneane D. World Religions: An Introduction for Students, Sussex Academic Press (1997). . + Fuller, Reginald H. The Foundations of New Testament Christology Scribners (1965). . + Froehle, Bryan; Gautier, Mary, Global Catholicism, Portrait of a World Church, Orbis books; Center for Applied Research in the Apostolate, Georgetown University (2003) + Funk, Robert. The Acts of Jesus: What Did Jesus Really Do?. Polebridge Press (1998). . + Glenny, W. Edward. Typology: A Summary of the Present Evangelical Discussion. + + Hanegraaff, Hank. Resurrection: The Capstone in the Arch of Christianity. Thomas Nelson (2000). . + Harnack, Adolf von. History of Dogma (1894). + Hickman, Hoyt L. and others. Handbook of the Christian Year. Abingdon Press (1986). + Hitchcock, Susan Tyler. Geography of Religion. National Geographic Society (2004) + Kelly, J.N.D. Early Christian Doctrines. + Kelly, J.N.D. The Athanasian Creed. Harper & Row, New York (1964). + Kirsch, Jonathan. God Against the Gods. + Kreeft, Peter. Catholic Christianity. Ignatius Press (2001) + Letham, Robert. The Holy Trinity in Scripture, History, Theology, and Worship. P & R Publishing (2005). . + Lorenzen, Thorwald. Resurrection, Discipleship, Justice: Affirming the Resurrection Jesus Christ Today. Smyth & Helwys (2003). . + McLaughlin, R. Emmet, Caspar Schwenckfeld, reluctant radical: his life to 1540, New Haven: Yale University Press (1986). . + MacCulloch, Diarmaid, The Reformation: A History. Viking Adult (2004). + MacCulloch, Diarmaid, A History of Christianity: The First Three Thousand Years. London, Allen Lane. 2009. + Marber, Peter. Money Changes Everything: How Global Prosperity Is Reshaping Our Needs, Values and Lifestyles. FT Press (2003). + Marthaler, Berard. Introducing the Catechism of the Catholic Church, Traditional Themes and Contemporary Issues. Paulist Press (1994). + Mathison, Keith. The Shape of Sola Scriptura (2001). + McClintock, John, Cyclopaedia of Biblical, Theological, and Ecclesiastical Literature. Harper &Brothers, original from Harvard University (1889) + McManners, John. Oxford Illustrated History of Christianity. Oxford University Press (1990). . + Metzger, Bruce M., Michael Coogan (ed.). Oxford Companion to the Bible. Oxford University Press (1993). . + . + Norman, Edward. The Roman Catholic Church, An Illustrated History. University of California (2007) + Olson, Roger E., The Mosaic of Christian Belief. InterVarsity Press (2002). . + Orlandis, Jose, A Short History of the Catholic Church. Scepter Publishers (1993) + Otten, Herman J. Baal or God? Liberalism or Christianity, Fantasy vs. Truth: Beliefs and Practices of the Churches of the World Today.... Second ed. New Haven, Mo.: Lutheran News, 1988. + Pelikan, Jaroslav; Hotchkiss, Valerie (ed.) Creeds and Confessions of Faith in the Christian Tradition. Yale University Press (2003). . + Putnam, Robert D. Democracies in Flux: The Evolution of Social Capital in Contemporary Society. Oxford University Press (2002). + + Riley-Smith, Jonathan. The Oxford History of the Crusades. New York: Oxford University Press, (1999). + Schama, Simon. A History of Britain. Hyperion (2000). . + Servetus, Michael. Restoration of Christianity. Lewiston, New York: Edwin Mellen Press (2007). + Simon, Edith. Great Ages of Man: The Reformation. Time-Life Books (1966). . + Spitz, Lewis. The Protestant Reformation. Concordia Publishing House (2003). . + Spurgeon, Charles. A Defense of Calvinism. + Sykes, Stephen; Booty, John; Knight, Jonathan. The Study of Anglicanism. Augsburg Fortress Publishers (1998). . + Talbott, Thomas. Three Pictures of God in Western Theology (1995). + Ustorf, Werner. "A missiological postscript", in: McLeod, Hugh; Ustorf, Werner (ed.). The Decline of Christendom in Western Europe, 1750–2000. Cambridge University Press (2003). + Walsh, Chad. Campus Gods on Trial. Rev. and enl. ed. New York: Macmillan Co., 1962, t.p. 1964. xiv, [4], 154 p. + +Further reading + + + + + MacCulloch, Diarmaid. Christianity: The First Three Thousand Years (Viking; 2010) 1,161 pp.; survey by leading historian + + + + + Roper, J.C., Bp. (1923), et al.. Faith in God, in series, Layman's Library of Practical Religion, Church of England in Canada, vol. 2. Toronto, Ont.: Musson Book Co. N.B.: The series statement is given in the more extended form which appears on the book's front cover. + + + + + + + Wills, Garry, "A Wild and Indecent Book" (review of David Bentley Hart, The New Testament: A Translation, Yale University Press, 577 pp.), The New York Review of Books, vol. LXV, no. 2 (8 February 2018), pp. 34–35. Discusses some pitfalls in interpreting and translating the New Testament. + +External links + + + "Christianity". Encyclopædia Britannica + Religion & Ethics – Christianity A number of introductory articles on Christianity from the BBC + + +1st-century establishments +1st-century introductions +Abrahamic religions +Monotheistic religions +Western culture +Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorithmic processes, and development of both hardware and software. Computing has scientific, engineering, mathematical, technological and social aspects. Major computing disciplines include computer engineering, computer science, cybersecurity, data science, information systems, information technology, digital art and software engineering. + +The term computing is also synonymous with counting and calculating. In earlier times, it was used in reference to the action performed by mechanical computing machines, and before that, to human computers. + +History + +The history of computing is longer than the history of computing hardware and includes the history of methods intended for pen and paper (or for chalk and slate) with or without the aid of tables. Computing is intimately tied to the representation of numbers, though mathematical concepts necessary for computing existed before numeral systems. The earliest known tool for use in computation is the abacus, and it is thought to have been invented in Babylon circa between 2700–2300 BC. Abaci, of a more modern design, are still used as calculation tools today. + +The first recorded proposal for using digital electronics in computing was the 1931 paper "The Use of Thyratrons for High Speed Automatic Counting of Physical Phenomena" by C. E. Wynn-Williams. Claude Shannon's 1938 paper "A Symbolic Analysis of Relay and Switching Circuits" then introduced the idea of using electronics for Boolean algebraic operations. + +The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947. In 1953, the University of Manchester built the first transistorized computer, the Manchester Baby. However, early junction transistors were relatively bulky devices that were difficult to mass-produce, which limited them to a number of specialised applications. The metal–oxide–silicon field-effect transistor (MOSFET, or MOS transistor) was invented by Mohamed Atalla and Dawon Kahng at Bell Labs in 1959. The MOSFET made it possible to build high-density integrated circuits, leading to what is known as the computer revolution or microcomputer revolution. + +Computer + +A computer is a machine that manipulates data according to a set of instructions called a computer program. The program has an executable form that the computer can use directly to execute the instructions. The same program in its human-readable source code form, enables a programmer to study and develop a sequence of steps known as an algorithm. Because the instructions can be carried out in different types of computers, a single set of source instructions converts to machine instructions according to the CPU type. + +The execution process carries out the instructions in a computer program. Instructions express the computations performed by the computer. They trigger sequences of simple actions on the executing machine. Those actions produce effects according to the semantics of the instructions. + +Computer hardware + +Computer hardware includes the physical parts of a computer, including central processing unit, memory and input/output. Computational logic and computer architecture are key topics in the field of computer hardware. + +Computer software + +Computer software, or just software, is a collection of computer programs and related data, which provides instructions to a computer. Software refers to one or more computer programs and data held in the storage of the computer. It is a set of programs, procedures, algorithms, as well as its documentation concerned with the operation of a data processing system. Program software performs the function of the program it implements, either by directly providing instructions to the computer hardware or by serving as input to another piece of software. The term was coined to contrast with the old term hardware (meaning physical devices). In contrast to hardware, software is intangible. + +Software is also sometimes used in a more narrow sense, meaning application software only. + +System software + +System software, or systems software, is computer software designed to operate and control computer hardware, and to provide a platform for running application software. System software includes operating systems, utility software, device drivers, window systems, and firmware. Frequently used development tools such as compilers, linkers, and debuggers are classified as system software. System software and middleware manage and integrate a computer's capabilities, but typically do not directly apply them in the performance of tasks that benefit the user, unlike application software. + +Application software + +Application software, also known as an application or an app, is computer software designed to help the user perform specific tasks. Examples include enterprise software, accounting software, office suites, graphics software and media players. Many application programs deal principally with documents. Apps may be bundled with the computer and its system software, or may be published separately. Some users are satisfied with the bundled apps and need never install additional applications. The system software manages the hardware and serves the application, which in turn serves the user. + +Application software applies the power of a particular computing platform or system software to a particular purpose. Some apps, such as Microsoft Office, are developed in multiple versions for several different platforms; others have narrower requirements and are generally referred to by the platform they run on. For example, a geography application for Windows or an Android application for education or Linux gaming. Applications that run only on one platform and increase the desirability of that platform due to the popularity of the application, known as killer applications. + +Computer network + +A computer network, often simply referred to as a network, is a collection of hardware components and computers interconnected by communication channels that allow sharing of resources and information. When at least one process in one device is able to send or receive data to or from at least one process residing in a remote device, the two devices are said to be in a network. Networks may be classified according to a wide variety of characteristics such as the medium used to transport the data, communications protocol used, scale, topology, and organizational scope. + +Communications protocols define the rules and data formats for exchanging information in a computer network, and provide the basis for network programming. One well-known communications protocol is Ethernet, a hardware and link layer standard that is ubiquitous in local area networks. Another common protocol is the Internet Protocol Suite, which defines a set of protocols for internetworking, i.e. for data communication between multiple networks, host-to-host data transfer, and application-specific data transmission formats. + +Computer networking is sometimes considered a sub-discipline of electrical engineering, telecommunications, computer science, information technology or computer engineering, since it relies upon the theoretical and practical application of these disciplines. + +Internet + +The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users. This includes millions of private, public, academic, business, and government networks, ranging in scope from local to global. These networks are linked by a broad array of electronic, wireless and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents of the World Wide Web and the infrastructure to support email. + +Computer programming + +Computer programming is the process of writing, testing, debugging, and maintaining the source code and documentation of computer programs. This source code is written in a programming language, which is an artificial language that is often more restrictive than natural languages, but easily translated by the computer. Programming is used to invoke some desired behavior (customization) from the machine. + +Writing high-quality source code requires knowledge of both the computer science domain and the domain in which the application will be used. The highest-quality software is thus often developed by a team of domain experts, each a specialist in some area of development. However, the term programmer may apply to a range of program quality, from hacker to open source contributor to professional. It is also possible for a single programmer to do most or all of the computer programming needed to generate the proof of concept to launch a new killer application. + +Computer programmer + +A programmer, computer programmer, or coder is a person who writes computer software. The term computer programmer can refer to a specialist in one area of computer programming or to a generalist who writes code for many kinds of software. One who practices or professes a formal approach to programming may also be known as a programmer analyst. A programmer's primary computer language (C, C++, Java, Lisp, Python etc.) is often prefixed to the above titles, and those who work in a web environment often prefix their titles with Web. The term programmer can be used to refer to a software developer, software engineer, computer scientist, or software analyst. However, members of these professions typically possess other software engineering skills, beyond programming. + +Computer industry + +The computer industry is made up of businesses involved in developing computer software, designing computer hardware and computer networking infrastructures, manufacturing computer components and providing information technology services, including system administration and maintenance. + +The software industry includes businesses engaged in development, maintenance and publication of software. The industry also includes software services, such as training, documentation, and consulting. + +Sub-disciplines of computing + +Computer engineering + +Computer engineering is a discipline that integrates several fields of electrical engineering and computer science required to develop computer hardware and software. Computer engineers usually have training in electronic engineering (or electrical engineering), software design, and hardware-software integration, rather than just software engineering or electronic engineering. Computer engineers are involved in many hardware and software aspects of computing, from the design of individual microprocessors, personal computers, and supercomputers, to circuit design. This field of engineering includes not only the design of hardware within its own domain, but also the interactions between hardware and the context in which it operates. + +Software engineering + +Software engineering (SE) is the application of a systematic, disciplined and quantifiable approach to the design, development, operation, and maintenance of software, and the study of these approaches. That is, the application of engineering to software. It is the act of using insights to conceive, model and scale a solution to a problem. The first reference to the term is the 1968 NATO Software Engineering Conference, and was intended to provoke thought regarding the perceived software crisis at the time. Software development, a widely used and more generic term, does not necessarily subsume the engineering paradigm. The generally accepted concepts of Software Engineering as an engineering discipline have been specified in the Guide to the Software Engineering Body of Knowledge (SWEBOK). The SWEBOK has become an internationally accepted standard in ISO/IEC TR 19759:2015. + +Computer science + +Computer science or computing science (abbreviated CS or Comp Sci) is the scientific and practical approach to computation and its applications. A computer scientist specializes in the theory of computation and the design of computational systems. + +Its subfields can be divided into practical techniques for its implementation and application in computer systems, and purely theoretical areas. Some, such as computational complexity theory, which studies fundamental properties of computational problems, are highly abstract, while others, such as computer graphics, emphasize real-world applications. Others focus on the challenges in implementing computations. For example, programming language theory studies approaches to the description of computations, while the study of computer programming investigates the use of programming languages and complex systems. The field of human–computer interaction focuses on the challenges in making computers and computations useful, usable, and universally accessible to humans. + +Cybersecurity +The field of cybersecurity pertains to the protection of computer systems and networks. This includes information and data privacy, preventing disruption of IT services and prevention of theft of and damage to hardware, software and data. + +Data science +Data science is a field that uses scientific and computing tools to extract information and insights from data, driven by the increasing volume and availability of data. Data mining, big data, statistics and machine learning are all interwoven with data science. + +Information systems + +Information systems (IS) is the study of complementary networks of hardware and software (see information technology) that people and organizations use to collect, filter, process, create, and distribute data. The ACM's Computing Careers describes IS as: + +The study of IS bridges business and computer science, using the theoretical foundations of information and computation to study various business models and related algorithmic processes within a computer science discipline. The field of Computer Information Systems (CIS) studies computers and algorithmic processes, including their principles, their software and hardware designs, their applications, and their impact on society while IS emphasizes functionality over design. + +Information technology + +Information technology (IT) is the application of computers and telecommunications equipment to store, retrieve, transmit and manipulate data, often in the context of a business or other enterprise. The term is commonly used as a synonym for computers and computer networks, but also encompasses other information distribution technologies such as television and telephones. Several industries are associated with information technology, including computer hardware, software, electronics, semiconductors, internet, telecom equipment, e-commerce and computer services. + +Research and emerging technologies + +DNA-based computing and quantum computing are areas of active research for both computing hardware and software, such as the development of quantum algorithms. Potential infrastructure for future technologies includes DNA origami on photolithography and quantum antennae for transferring information between ion traps. By 2011, researchers had entangled 14 qubits. Fast digital circuits, including those based on Josephson junctions and rapid single flux quantum technology, are becoming more nearly realizable with the discovery of nanoscale superconductors. + +Fiber-optic and photonic (optical) devices, which already have been used to transport data over long distances, are starting to be used by data centers, along with CPU and semiconductor memory components. This allows the separation of RAM from CPU by optical interconnects. IBM has created an integrated circuit with both electronic and optical information processing in one chip. This is denoted CMOS-integrated nanophotonics (CINP). One benefit of optical interconnects is that motherboards, which formerly required a certain kind of system on a chip (SoC), can now move formerly dedicated memory and network controllers off the motherboards, spreading the controllers out onto the rack. This allows standardization of backplane interconnects and motherboards for multiple types of SoCs, which allows more timely upgrades of CPUs. + +Another field of research is spintronics. Spintronics can provide computing power and storage, without heat buildup. Some research is being done on hybrid chips, which combine photonics and spintronics. There is also research ongoing on combining plasmonics, photonics, and electronics. + +Cloud computing +Cloud computing is a model that allows for the use of computing resources, such as servers or applications, without the need for interaction between the owner of these resources and the end user. It is typically offered as a service, making it an example of Software as a Service, Platforms as a Service, and Infrastructure as a Service, depending on the functionality offered. Key characteristics include on-demand access, broad network access, and the capability of rapid scaling. It allows individual users or small business to benefit from economies of scale. + +One area of interest in this field is its potential to support energy efficiency. Allowing thousands of instances of computation to occur on one single machine instead of thousands of individual machines could help save energy. It could also ease the transition to renewable energy source, since it would suffice to power one server farm with renewable energy, rather than millions of homes and offices. + +However, this centralized computing model poses several challenges, especially in security and privacy. Current legislation does not sufficiently protect users from companies mishandling their data on company servers. This suggests potential for further legislative regulations on cloud computing and tech companies. + +Quantum computing +Quantum computing is an area of research that brings together the disciplines of computer science, information theory, and quantum physics. While the idea of information as part of physics is relatively new, there appears to be a strong tie between information theory and quantum mechanics. Whereas traditional computing operates on a binary system of ones and zeros, quantum computing uses qubits. Qubits are capable of being in a superposition, i.e. in both states of one and zero, simultaneously. Thus, the value of the qubit is not between 1 and 0, but changes depending on when it is measured. This trait of qubits is known as quantum entanglement, and is the core idea of quantum computing that allows quantum computers to do large scale computations. Quantum computing is often used for scientific research in cases where traditional computers do not have the computing power to do the necessary calculations, such in molecular modeling. Large molecules and their reactions are far too complex for traditional computers to calculate, but the computational power of quantum computers could provide a tool to perform such calculations. + +See also + Artificial intelligence + Computational thinking + Creative computing + Electronic data processing + Enthusiast computing + Index of history of computing articles + Instruction set architecture + Lehmer sieve + List of computer term etymologies + Mobile computing + Scientific computing + +References + +External links + +FOLDOC: the Free On-Line Dictionary Of Computing +A casino is a facility for certain types of gambling. Casinos are often built near or combined with hotels, resorts, restaurants, retail shops, cruise ships, and other tourist attractions. Some casinos are also known for hosting live entertainment, such as stand-up comedy, concerts, and sports. + +and usage +Casino is of Italian origin; the root means a house. The term casino may mean a small country villa, summerhouse, or social club. During the 19th century, casino came to include other public buildings where pleasurable activities took place; such edifices were usually built on the grounds of a larger Italian villa or palazzo, and were used to host civic town functions, including dancing, gambling, music listening, and sports. Examples in Italy include Villa Farnese and Villa Giulia, and in the US the Newport Casino in Newport, Rhode Island. In modern-day Italian, a is a brothel (also called , literally "closed house"), a mess (confusing situation), or a noisy environment; a gaming house is spelt , with an accent. + +Not all casinos are used for gaming. The Catalina Casino, on Santa Catalina Island, California, has never been used for traditional games of chance, which were already outlawed in California by the time it was built. The Copenhagen Casino was a Danish theatre which also held public meetings during the 1848 Revolution, which made Denmark a constitutional monarchy. + +In military and non-military usage, a (Spanish) or (German) is an officers' mess. + +History of gambling houses + +The precise origin of gambling is unknown. It is generally believed that gambling in some form or another has been seen in almost every society in history. From Ancient Mesopotamia, Greeks and Romans to Napoleon's France and Elizabethan England, much of history is filled with stories of entertainment based on games of chance. + +The first known European gambling house, not called a casino although meeting the modern definition, was the Ridotto, established in Venice, Italy, in 1638 by the Great Council of Venice to provide controlled gambling during the carnival season. It was closed in 1774 as the city government felt it was impoverishing the local gentry. + +In American history, early gambling establishments were known as saloons. The creation and importance of saloons was greatly influenced by four major cities: New Orleans, St. Louis, Chicago and San Francisco. It was in the saloons that travelers could find people to talk to, drink with, and often gamble with. During the early 20th century in the US, gambling was outlawed by state legislation. However, in 1931, gambling was legalized throughout the state of Nevada, where the US's first legalized casinos were set up. In 1976 New Jersey allowed gambling in Atlantic City, now the US's second largest gambling city. + +Gambling in casinos + +Most jurisdictions worldwide have a minimum gambling age of 18 to 21. + +Customers gamble by playing games of chance, in some cases with an element of skill, such as craps, roulette, baccarat, blackjack, and video poker. Most games have mathematically determined odds that ensure the house has at all times an advantage over the players. This can be expressed more precisely by the notion of expected value, which is uniformly negative (from the player's perspective). This advantage is called the house edge. In games such as poker where players play against each other, the house takes a commission called the rake. Casinos sometimes give out complimentary items or comps to gamblers. + +Payout is the percentage of funds ("winnings") returned to players. + +Casinos in the United States say that a player staking money won from the casino is playing with the house's money. + +Video Lottery Machines (slot machines) have become one of the most popular forms of gambling in casinos. investigative reports have started calling into question whether the modern-day slot-machine is addictive. + +Design +Casino design—regarded as a psychological exercise—is an intricate process that involves optimising floor plan, décor and atmospherics to encourage gambling. + +Factors influencing gambling tendencies include sound, odour and lighting. Natasha Dow Schüll, an anthropologist at the Massachusetts Institute of Technology, highlights the decision of the audio directors at Silicon Gaming to make its slot machines resonate in "the universally pleasant tone of C, sampling existing casino soundscapes to create a sound that would please but not clash". + +Alan Hirsch, founder of the Smell & Taste Treatment and Research Foundation in Chicago, studied the impact of certain scents on gamblers, discerning that a pleasant albeit unidentifiable odor released by Las Vegas slot machines generated about 50% more in daily revenue. He suggested that the scent acted as an aphrodisiac, causing a more aggressive form of gambling. + +Markets +The following lists major casino markets in the world with casino revenue of over US$1 billion as published in PricewaterhouseCoopers's report on +the outlook for the global casino market: + +By region + +By markets + +By company +According to Bloomberg, accumulated revenue of the biggest casino operator companies worldwide amounted to almost US$55 billion in 2011. SJM Holdings Ltd. was the leading company in this field, earning $9.7 bn in 2011, followed by Las Vegas Sands Corp. at $7.4 bn. The third-biggest casino operator company (based on revenue) was Caesars Entertainment, with revenue of US$6.2 bn. + +Significant sites +While there are casinos in many places, a few places have become well known specifically for gambling. Perhaps the place almost defined by its casino is Monte Carlo, but other places are known as gambling centers. + +Monte Carlo, Monaco + +Monte Carlo Casino, located in Monte Carlo city, in Monaco, is a casino and a tourist attraction. + +Monte Carlo Casino has been depicted in many books, including Ben Mezrich's Busting Vegas, where a group of Massachusetts Institute of Technology students beat the casino out of nearly $1 million. This book is based on real people and events; however, many of those events are contested by main character Semyon Dukach. Monte Carlo Casino has also been featured in multiple James Bond novels and films. + +The casino is mentioned in the song "The Man Who Broke the Bank at Monte Carlo" as well as the film of the same name. + +Campione d'Italia + +Casinò di Campione is located in the tiny Italian enclave of Campione d'Italia, within Ticino, Switzerland. The casino was founded in 1917 as a site to gather information from foreign diplomats during the First World War. Today it is owned by the Italian government, and operated by the municipality. With gambling laws being less strict than in Italy and Switzerland, it is among the most popular gambling destination besides Monte Carlo. The income from the casino is sufficient for the operation of Campione without the imposition of taxes, or obtaining of other revenue. In 2007, the casino moved into new premises of more than , making it the largest casino in Europe. The new casino was built alongside the old one, which dated from 1933 and has since been demolished. + +Malta +The archipelago of Malta is a particularly famous place for casinos, standing out mainly with the historic casino located at the princely residence of Dragonara. Dragonara Palace was built in 1870. Its name comes from the Dragonara Point, the peninsula where it is built. On 15 July 1964, the palace opened as a casino. + +Macau + +The former Portuguese colony of Macau, a special administrative region of the People's Republic of China since 1999, is a popular destination for visitors who wish to gamble. This started in Portuguese times, when Macau was popular with visitors from nearby Hong Kong, where gambling was more closely regulated. The Venetian Macao is currently the largest casino in the world. Macau also surpassed Las Vegas as the largest gambling market in the world. + +Germany +Machine-based gaming is only permitted in land-based casinos, restaurants, bars and gaming halls, and only subject to a licence. Online slots are, at the moment, only permitted if they are operated under a Schleswig-Holstein licence. AWPs are governed by federal law – the Trade Regulation Act and the Gaming Ordinance. + +Portugal + +The Casino Estoril, located in the municipality of Cascais, on the Portuguese Riviera, near Lisbon, is the largest casino in Europe by capacity. + +During the World War II, it was reputed to be a gathering point for spies, dispossessed royals, and wartime adventurers; it became an inspiration for Ian Fleming's James Bond 007 novel Casino Royale. + +Russia + +There are four legal gaming zones in Russia: "Siberian Coin" (Altay), "Yantarnaya" (Kaliningrad region), "Azov-city" (Rostov region) and "Primorie" (Primorie region). + +Singapore +Singapore is an up-and-coming destination for visitors wanting to gamble, although there are currently only two casinos (both foreign owned), in Singapore. The Marina Bay Sands is the most expensive standalone casino in the world, at a price of US$8 billion, and is among the world's ten most expensive buildings. The Resorts World Sentosa has the world's largest oceanarium. + +United States + +With currently over 1,000 casinos, the United States has the largest number of casinos in the world. The number continues to grow steadily as more states seek to legalize casinos. 40 states now have some form of casino gambling. Interstate competition, such as gaining tourism, has been a driving factor to continuous legalization. Relatively small places such as Las Vegas are best known for gambling; larger cities such as Chicago are not defined by their casinos in spite of the large turnover. + +The Las Vegas Valley has the largest concentration of casinos in the United States. Based on revenue, Atlantic City, New Jersey, ranks second, and the Chicago region third. + +Top American casino markets by revenue (2022 annual revenues): + + Las Vegas Strip $7.05 billion + Atlantic City $2.57 billion + Chicago region $2.01 billion + Baltimore–Washington Metropolitan Area $2.00 billion + Mississippi Gulf Coast $1.61 billion + New York City $1.46 billion + Philadelphia $1.40 billion + Detroit $1.29 billion + St. Louis $1.03 billion + Boulder Strip $967 million + Reno/Sparks $889 million + Kansas City $861 million + The Poconos $849 million + Lake Charles, Louisiana $843 million + Black Hawk/Central City $812 million + Downtown Las Vegas $731 million + Tunica/Lula $696 million + Cincinnati $655 million + Shreveport/Bossier City $646 million + Pittsburgh/Meadowlands $630 million + +The Nevada Gaming Control Board divides Clark County, which is coextensive with the Las Vegas metropolitan area, into seven market regions for reporting purposes. + +Native American gaming has been responsible for a rise in the number of casinos outside of Las Vegas and Atlantic City. + +Vietnam +In Vietnam, the term "casinos" encompasses gambling activities within the country. Unofficially defined, a "casino" typically denotes a well-established and professional gambling establishment that is generally lawful but exclusively caters to foreign players. On the other hand, "gambling houses" or "gambling dens" are smaller, illicit gambling venues. + +As of 2022, Vietnam has 9 operating casinos, including: Đồ Sơn casino (Hải Phòng), Lợi Lai casino, Hoàng Gia casino (Quảng Ninh), Hồng Vận casino (Quảng Ninh), Lào Cai casino (Lào Cai), Silver Shores casino (Đà Nẵng), Hồ Tràm casino (Bà Rịa – Vũng Tàu), Nam Hội An casino (Quảng Nam), Phú Quốc casino in Kien Giang. + +In a survey conducted by the Vietnamese Institute for Sustainable Regional Development and released on September 30, 2015, it was found that 71% of the respondents held the belief that allowing Vietnamese individuals to access casinos would result in an increase in the number of players. Furthermore, 47.4% of the participants expressed the view that engaging in rewarding recreational activities has a positive impact on job opportunities for residents. Additionally, 46.2% of the respondents believed that such activities contribute positively to Vietnam's ability to attract investments. + +Security + +Given the large amounts of currency handled within a casino, both patrons and staff may be tempted to cheat and steal, in collusion or independently; most casinos have security measures to prevent this. Security cameras located throughout the casino are the most basic measure. + +Modern casino security is usually divided between a physical security force and a specialized surveillance department. The physical security force usually patrols the casino and responds to calls for assistance and reports of suspicious or definite criminal activity. A specialized surveillance department operates the casino's closed circuit television system, known in the industry as the eye in the sky. Both of these specialized casino security departments work very closely with each other to ensure the safety of both guests and the casino's assets, and have been quite successful in preventing crime. Some casinos also have catwalks in the ceiling above the casino floor, which allow surveillance personnel to look directly down, through one way glass, on the activities at the tables and slot machines. + +When it opened in 1989, The Mirage was the first casino to use cameras full-time on all table games. + +In addition to cameras and other technological measures, casinos also enforce security through rules of conduct and behavior; for example, players at card games are required to keep the cards they are holding in their hands visible at all times. + +Business practices +Over the past few decades, casinos have developed many different marketing techniques for attracting and maintaining loyal patrons. Many casinos use a loyalty rewards program used to track players' spending habits and target their patrons more effectively, by sending mailings with free slot play and other promotions. Casino Helsinki in Helsinki, Finland, for example, donates all of its profits to charity. + +Crime +Casinos have been linked to organised crime, with early casinos in Las Vegas originally dominated by the American Mafia and in Macau by Triad syndicates. + +According to some police reports, local incidence of reported crime often doubles or triples within three years of a casino's opening. In a 2004 report by the US Department of Justice, researchers interviewed people who had been arrested in Las Vegas and Des Moines and found that the percentage of problem or pathological gamblers among the arrestees was three to five times higher than in the general population. + +It has been said that economic studies showing a positive relationship between casinos and crime usually fail to consider the visiting population: they count crimes committed by visitors but do not count visitors in the population measure, which overstates the crime rate. Part of the reason this methodology is used, despite the overstatement, is that reliable data on tourist count are often not available. + +Occupational health and safety + +There are unique occupational health issues in the casino industry. The most common are from cancers resulting from exposure to second-hand tobacco smoke and musculoskeletal injury (MSI) from repetitive motion injuries while running table games over many hours. + +Gallery + +See also + + American Gaming Association + Black Book (gaming) + Casino hotel + List of casino hotels + Casino token + European Gaming & Amusement Federation + Gambling in Macau + Gambling + Gaming in Mexico + Gambling in the United States + Gambling in Manila + Gaming Control Boards + Gaming law + Global Gaming Expo + List of casinos + Locals casino + Native American gaming + Online casino + Online gambling + Online poker + Sports betting + +Further reading + + Poley, Jared (2023). Luck, Leisure, and the Casino in Nineteenth-Century Europe: A Cultural History of Gambling. Cambridge University Press. + +References + +External links + + + + +Gambling +Khmer (; , UNGEGN: ) is an Austroasiatic language spoken by the Khmer people, and the official and national language of Cambodia. Khmer has been influenced considerably by Sanskrit and Pali, especially in the royal and religious registers, through Hinduism and Buddhism. It is also the earliest recorded and earliest written language of the Mon–Khmer family, predating Mon and Vietnamese, due to Old Khmer being the language of the historical empires of Chenla, Angkor and, presumably, their earlier predecessor state, Funan. + +The vast majority of Khmer speakers speak Central Khmer, the dialect of the central plain where the Khmer are most heavily concentrated. Within Cambodia, regional accents exist in remote areas but these are regarded as varieties of Central Khmer. Two exceptions are the speech of the capital, Phnom Penh, and that of the Khmer Khe in Stung Treng province, both of which differ sufficiently enough from Central Khmer to be considered separate dialects of Khmer. + +Outside of Cambodia, three distinct dialects are spoken by ethnic Khmers native to areas that were historically part of the Khmer Empire. The Northern Khmer dialect is spoken by over a million Khmers in the southern regions of Northeast Thailand and is treated by some linguists as a separate language. Khmer Krom, or Southern Khmer, is the first language of the Khmer of Vietnam, while the Khmer living in the remote Cardamom Mountains speak a very conservative dialect that still displays features of the Middle Khmer language. + +Khmer is primarily an analytic, isolating language. There are no inflections, conjugations or case endings. Instead, particles and auxiliary words are used to indicate grammatical relationships. General word order is subject–verb–object, and modifiers follow the word they modify. Classifiers appear after numbers when used to count nouns, though not always so consistently as in languages like Chinese. In spoken Khmer, topic-comment structure is common, and the perceived social relation between participants determines which sets of vocabulary, such as pronouns and honorifics, are proper. + +Khmer differs from neighboring languages such as Burmese, Thai, Lao, and Vietnamese in that it is not a tonal language. Words are stressed on the final syllable, hence many words conform to the typical Mon–Khmer pattern of a stressed syllable preceded by a minor syllable. The language has been written in the Khmer script, an abugida descended from the Brahmi script via the southern Indian Pallava script, since at least the 7th century. The script's form and use has evolved over the centuries; its modern features include subscripted versions of consonants used to write clusters and a division of consonants into two series with different inherent vowels. + +Classification + +Khmer is a member of the Austroasiatic language family, the autochthonous family in an area that stretches from the Malay Peninsula through Southeast Asia to East India. Austroasiatic, which also includes Mon, Vietnamese and Munda, has been studied since 1856 and was first proposed as a language family in 1907. Despite the amount of research, there is still doubt about the internal relationship of the languages of Austroasiatic. + +Diffloth places Khmer in an eastern branch of the Mon-Khmer languages. In these classification schemes Khmer's closest genetic relatives are the Bahnaric and Pearic languages. More recent classifications doubt the validity of the Mon-Khmer sub-grouping and place the Khmer language as its own branch of Austroasiatic equidistant from the other 12 branches of the family. + +Geographic distribution and dialects + +Khmer is spoken by some 13 million people in Cambodia, where it is the official language. It is also a second language for most of the minority groups and indigenous hill tribes there. Additionally there are a million speakers of Khmer native to southern Vietnam (1999 census) and 1.4 million in northeast Thailand (2006). + +Khmer dialects, although mutually intelligible, are sometimes quite marked. Notable variations are found in speakers from Phnom Penh (Cambodia's capital city), the rural Battambang area, the areas of Northeast Thailand adjacent to Cambodia such as Surin province, the Cardamom Mountains, and southern Vietnam. The dialects form a continuum running roughly north to south. Standard Cambodian Khmer is mutually intelligible with the others but a Khmer Krom speaker from Vietnam, for instance, may have great difficulty communicating with a Khmer native of Sisaket Province in Thailand. + +The following is a classification scheme showing the development of the modern Khmer dialects. + Middle Khmer + Cardamom (Western) Khmer + Central Khmer + Surin (Northern) Khmer + Standard Khmer and related dialects (including Khmer Krom) + +Standard Khmer, or Central Khmer, the language as taught in Cambodian schools and used by the media, is based on the dialect spoken throughout the Central Plain, a region encompassed by the northwest and central provinces. + +Northern Khmer (called in Khmer) refers to the dialects spoken by many in several border provinces of present-day northeast Thailand. After the fall of the Khmer Empire in the early 15th century, the Dongrek Mountains served as a natural border leaving the Khmer north of the mountains under the sphere of influence of the Kingdom of Lan Xang. The conquests of Cambodia by Naresuan the Great for Ayutthaya furthered their political and economic isolation from Cambodia proper, leading to a dialect that developed relatively independently from the midpoint of the Middle Khmer period. + +This has resulted in a distinct accent influenced by the surrounding tonal languages Lao and Thai, lexical differences, and phonemic differences in both vowels and distribution of consonants. Syllable-final , which has become silent in other dialects of Khmer, is still pronounced in Northern Khmer. Some linguists classify Northern Khmer as a separate but closely related language rather than a dialect. + +Western Khmer, also called Cardamom Khmer or Chanthaburi Khmer, is spoken by a very small, isolated population in the Cardamom mountain range extending from western Cambodia into eastern Central Thailand. Although little studied, this variety is unique in that it maintains a definite system of vocal register that has all but disappeared in other dialects of modern Khmer. + +Phnom Penh Khmer is spoken in the capital and surrounding areas. This dialect is characterized by merging or complete elision of syllables, which speakers from other regions consider a "relaxed" pronunciation. For instance, "Phnom Penh" is sometimes shortened to "m'Penh". Another characteristic of Phnom Penh speech is observed in words with an "r" either as an initial consonant or as the second member of a consonant cluster (as in the English word "bread"). The "r", trilled or flapped in other dialects, is either pronounced as a uvular trill or not pronounced at all. + +This alters the quality of any preceding consonant, causing a harder, more emphasized pronunciation. Another unique result is that the syllable is spoken with a low-rising or "dipping" tone much like the "hỏi" tone in Vietnamese. For example, some people pronounce ('fish') as : the is dropped and the vowel begins by dipping much lower in tone than standard speech and then rises, effectively doubling its length. Another example is the word ('study'), which is pronounced , with the uvular "r" and the same intonation described above. + +Khmer Krom or Southern Khmer is spoken by the indigenous Khmer population of the Mekong Delta, formerly controlled by the Khmer Empire but part of Vietnam since 1698. Khmers are persecuted by the Vietnamese government for using their native language and, since the 1950s, have been forced to take Vietnamese names. Consequently, very little research has been published regarding this dialect. It has been generally influenced by Vietnamese for three centuries and accordingly displays a pronounced accent, tendency toward monosyllabic words and lexical differences from Standard Khmer. + +Khmer Khe is spoken in the Se San, Srepok and Sekong river valleys of Sesan and Siem Pang districts in Stung Treng Province. Following the decline of Angkor, the Khmer abandoned their northern territories, which the Lao then settled. In the 17th century, Chey Chetha XI led a Khmer force into Stung Treng to retake the area. The Khmer Khe living in this area of Stung Treng in modern times are presumed to be the descendants of this group. Their dialect is thought to resemble that of pre-modern Siem Reap. + +Historical periods + +Linguistic study of the Khmer language divides its history into four periods one of which, the Old Khmer period, is subdivided into pre-Angkorian and Angkorian. Pre-Angkorian Khmer is the Old Khmer language from 600 CE through 800. Angkorian Khmer is the language as it was spoken in the Khmer Empire from the 9th century until the 13th century. + +The following centuries saw changes in morphology, phonology and lexicon. The language of this transition period, from about the 14th to 18th centuries, is referred to as Middle Khmer and saw borrowings from Thai in the literary register. Modern Khmer is dated from the 19th century to today. + +The following table shows the conventionally accepted historical stages of Khmer. + +Just as modern Khmer was emerging from the transitional period represented by Middle Khmer, Cambodia fell under the influence of French colonialism. Thailand, which had for centuries claimed suzerainty over Cambodia and controlled succession to the Cambodian throne, began losing its influence on the language. In 1887 Cambodia was fully integrated into French Indochina, which brought in a French-speaking aristocracy. This led to French becoming the language of higher education and the intellectual class. By 1907, the French had wrested over half of modern-day Cambodia, including the north and northwest where Thai had been the prestige language, back from Thai control and reintegrated it into the country. + +Many native scholars in the early 20th century, led by a monk named Chuon Nath, resisted the French and Thai influences on their language. Forming the government sponsored Cultural Committee to define and standardize the modern language, they championed Khmerization, purging of foreign elements, reviving affixation, and the use of Old Khmer roots and historical Pali and Sanskrit to coin new words for modern ideas. Opponents, led by Keng Vannsak, who embraced "total Khmerization" by denouncing the reversion to classical languages and favoring the use of contemporary colloquial Khmer for neologisms, and Ieu Koeus, who favored borrowing from Thai, were also influential. + +Koeus later joined the Cultural Committee and supported Nath. Nath's views and prolific work won out and he is credited with cultivating modern Khmer-language identity and culture, overseeing the translation of the entire Pali Buddhist canon into Khmer. He also created the modern Khmer language dictionary that is still in use today, helping preserve Khmer during the French colonial period. + +Phonology + +The phonological system described here is the inventory of sounds of the standard spoken language, represented using the International Phonetic Alphabet (IPA). + +Consonants + +The voiceless plosives may occur with or without aspiration (as vs. , etc.); this difference is contrastive before a vowel. However, the aspirated sounds in that position may be analyzed as sequences of two phonemes: . This analysis is supported by the fact that infixes can be inserted between the stop and the aspiration; for example ('big') becomes ('size') with a nominalizing infix. When one of these plosives occurs initially before another consonant, aspiration is no longer contrastive and can be regarded as mere phonetic detail: slight aspiration is expected when the following consonant is not one of (or if the initial plosive is ). + +The voiced plosives are pronounced as implosives by most speakers, but this feature is weak in educated speech, where they become . + +In syllable-final position, and approach and respectively. The stops are unaspirated and have no audible release when occurring as syllable finals. + +In addition, the consonants , , and occur occasionally in recent loan words in the speech of Cambodians familiar with French and other languages. + +Vowels +Various authors have proposed slightly different analyses of the Khmer vowel system. This may be in part because of the wide degree of variation in pronunciation between individual speakers, even within a dialectal region. The description below follows Huffman (1970). The number of vowel nuclei and their values vary between dialects; differences exist even between the Standard Khmer system and that of the Battambang dialect on which the standard is based. + +In addition, some diphthongs and triphthongs are analyzed as a vowel nucleus plus a semivowel ( or ) coda because they cannot be followed by a final consonant. These include: (with short monophthongs) , , , , ; (with long monophthongs) , ; (with long diphthongs) , , , , and . + +Syllable structure +A Khmer syllable begins with a single consonant, or else with a cluster of two, or rarely three, consonants. The only possible clusters of three consonants at the start of a syllable are , and (with aspirated consonants analyzed as two-consonant sequences) . There are 85 possible two-consonant clusters (including [pʰ] etc. analyzed as /ph/ etc.). All the clusters are shown in the following table, phonetically, i.e. superscript ʰ can mark either contrastive or non-contrastive aspiration (see above). + +Slight vowel epenthesis occurs in the clusters consisting of a plosive followed by , in those beginning , and in the cluster . + +After the initial consonant or consonant cluster comes the syllabic nucleus, which is one of the vowels listed above. This vowel may end the syllable or may be followed by a coda, which is a single consonant. If the syllable is stressed and the vowel is short, there must be a final consonant. All consonant sounds except and the aspirates can appear as the coda (although final /r/ is heard in some dialects, most notably in Northern Khmer). + +A minor syllable (unstressed syllable preceding the main syllable of a word) has a structure of CV-, CrV-, CVN- or CrVN- (where C is a consonant, V a vowel, and N a nasal consonant). The vowels in such syllables are usually short; in conversation they may be reduced to , although in careful or formal speech, including on television and radio, they are clearly articulated. An example of such a word is mɔnuh, mɔnɨh, mĕəʾnuh ('person'), pronounced , or more casually . + +Stress +Stress in Khmer falls on the final syllable of a word. Because of this predictable pattern, stress is non-phonemic in Khmer (it does not distinguish different meanings). + +Most Khmer words consist of either one or two syllables. In most native disyllabic words, the first syllable is a minor (fully unstressed) syllable. Such words have been described as sesquisyllabic (i.e. as having one-and-a-half syllables). There are also some disyllabic words in which the first syllable does not behave as a minor syllable, but takes secondary stress. Most such words are compounds, but some are single morphemes (generally loanwords). An example is ('language'), pronounced . + +Words with three or more syllables, if they are not compounds, are mostly loanwords, usually derived from Pali, Sanskrit, or more recently, French. They are nonetheless adapted to Khmer stress patterns. Primary stress falls on the final syllable, with secondary stress on every second syllable from the end. Thus in a three-syllable word, the first syllable has secondary stress; in a four-syllable word, the second syllable has secondary stress; in a five-syllable word, the first and third syllables have secondary stress, and so on. Long polysyllables are not often used in conversation. + +Compounds, however, preserve the stress patterns of the constituent words. Thus , the name of a kind of cookie (literally 'bird's nest'), is pronounced , with secondary stress on the second rather than the first syllable, because it is composed of the words ('nest') and ('bird'). + +Phonation and tone + +Khmer once had a phonation distinction in its vowels, but this now survives only in the most archaic dialect (Western Khmer). The distinction arose historically when vowels after Old Khmer voiced consonants became breathy voiced and diphthongized; for example became . When consonant voicing was lost, the distinction was maintained by the vowel (); later the phonation disappeared as well (). These processes explain the origin of what are now called a-series and o-series consonants in the Khmer script. + +Although most Cambodian dialects are not tonal, the colloquial Phnom Penh dialect has developed a tonal contrast (level versus peaking tone) as a by-product of the elision of . + +Intonation +Intonation often conveys semantic context in Khmer, as in distinguishing declarative statements, questions and exclamations. The available grammatical means of making such distinctions are not always used, or may be ambiguous; for example, the final interrogative particle can also serve as an emphasizing (or in some cases negating) particle. + +The intonation pattern of a typical Khmer declarative phrase is a steady rise throughout followed by an abrupt drop on the last syllable. +       ('I don't want it') + +Other intonation contours signify a different type of phrase such as the "full doubt" interrogative, similar to yes–no questions in English. Full doubt interrogatives remain fairly even in tone throughout, but rise sharply towards the end. +       ('do you want to go to Siem Reap?') + +Exclamatory phrases follow the typical steadily rising pattern, but rise sharply on the last syllable instead of falling. +       ('this book is expensive!') + +Grammar + +Khmer is primarily an analytic language with no inflection. Syntactic relations are mainly determined by word order. Old and Middle Khmer used particles to mark grammatical categories and many of these have survived in Modern Khmer but are used sparingly, mostly in literary or formal language. Khmer makes extensive use of auxiliary verbs, "directionals" and serial verb construction. Colloquial Khmer is a zero copula language, instead preferring predicative adjectives (and even predicative nouns) unless using a copula for emphasis or to avoid ambiguity in more complex sentences. Basic word order is subject–verb–object (SVO), although subjects are often dropped; prepositions are used rather than postpositions. + +Topic-Comment constructions are common and the language is generally head-initial (modifiers follow the words they modify). Some grammatical processes are still not fully understood by western scholars. For example, it is not clear if certain features of Khmer grammar, such as actor nominalization, should be treated as a morphological process or a purely syntactic device, and some derivational morphology seems "purely decorative" and performs no known syntactic work. + +Lexical categories have been hard to define in Khmer. Henri Maspero, an early scholar of Khmer, claimed the language had no parts of speech, while a later scholar, Judith Jacob, posited four parts of speech and innumerable particles. John Haiman, on the other hand, identifies "a couple dozen" parts of speech in Khmer with the caveat that Khmer words have the freedom to perform a variety of syntactic functions depending on such factors as word order, relevant particles, location within a clause, intonation and context. Some of the more important lexical categories and their function are demonstrated in the following example sentence taken from a hospital brochure: + +Morphology +Modern Khmer is an isolating language, which means that it uses little productive morphology. There is some derivation by means of prefixes and infixes, but this is a remnant of Old Khmer and not always productive in the modern language. Khmer morphology is evidence of a historical process through which the language was, at some point in the past, changed from being an agglutinative language to adopting an isolating typology. Affixed forms are lexicalized and cannot be used productively to form new words. Below are some of the most common affixes with examples as given by Huffman. + +Compounding in Khmer is a common derivational process that takes two forms, coordinate compounds and repetitive compounds. Coordinate compounds join two unbound morphemes (independent words) of similar meaning to form a compound signifying a concept more general than either word alone. Coordinate compounds join either two nouns or two verbs. Repetitive compounds, one of the most productive derivational features of Khmer, use reduplication of an entire word to derive words whose meaning depends on the class of the reduplicated word. A repetitive compound of a noun indicates plurality or generality while that of an adjectival verb could mean either an intensification or plurality. + +Coordinate compounds: +{| style="width:25%;" +| || + || || ⇒ || +|- +| "father" || || "mother" || ⇒ || "parents" +|} +{| style="width:25%;" +| || + || || ⇒ || +|- +| "to transport" || || "to bring" || ⇒ || "to lead" +|} + +Repetitive compounds: +{| style="width:40%;" +| || ⇒ || || || || ⇒ || +|- +| "fast" || || "very fast, quickly" || || "women" || || "women, women in general" +|} + +Nouns and pronouns +Khmer nouns do not inflect for grammatical gender or singular/plural. There are no articles, but indefiniteness is often expressed by the word for "one" ( ) following the noun as in ( "a dog"). Plurality can be marked by postnominal particles, numerals, or reduplication of a following adjective, which, although similar to intensification, is usually not ambiguous due to context. + +{| +| +|style="width:20%; text-align: center"| or +| +|style="width:20%; text-align: center"| or +| +|} + +Classifying particles are used after numerals, but are not always obligatory as they are in Thai or Chinese, for example, and are often dropped in colloquial speech. Khmer nouns are divided into two groups: mass nouns, which take classifiers; and specific, nouns, which do not. The overwhelming majority are mass nouns. + +Possession is colloquially expressed by word order. The possessor is placed after the thing that is possessed. Alternatively, in more complex sentences or when emphasis is required, a possessive construction using the word (, "property, object") may be employed. In formal and literary contexts, the possessive particle () is used: + +{| +| +| style="width:20%; text-align: center" | or +| +| style="width:20%; text-align: center" | or +| +|} + +Pronouns are subject to a complicated system of social register, the choice of pronoun depending on the perceived relationships between speaker, audience and referent (see Social registers below). Khmer exhibits pronoun avoidance, so kinship terms, nicknames and proper names are often used instead of pronouns (including for the first person) among intimates. Subject pronouns are frequently dropped in colloquial conversation. + +Adjectives, verbs and verb phrases may be made into nouns by the use of nominalization particles. Three of the more common particles used to create nouns are , , and . These particles are prefixed most often to verbs to form abstract nouns. The latter, derived from Sanskrit, also occurs as a suffix in fixed forms borrowed from Sanskrit and Pali such as ("health") from ("to be healthy"). + +{| +| +| style="width:20%; text-align: center" | +| +| style="width:20%; text-align: center" | +| +|} + +Adjectives and adverbs +Adjectives, demonstratives and numerals follow the noun they modify. Adverbs likewise follow the verb. Morphologically, adjectives and adverbs are not distinguished, with many words often serving either function. Adjectives are also employed as verbs as Khmer sentences rarely use a copula. + +Degrees of comparison are constructed syntactically. Comparatives are expressed using the word : "A X [B]" (A is more X [than B]). The most common way to express superlatives is with : "A X " (A is the most X). Intensity is also expressed syntactically, similar to other languages of the region, by reduplication or with the use of intensifiers. + +{| +| +| style="width:15%; text-align: center" | +| +| style="width:15%; text-align: center" | +| +|} + +Verbs +As is typical of most East Asian languages, Khmer verbs do not inflect at all; tense, aspect and mood can be expressed using auxiliary verbs, particles (such as , placed before a verb to express continuous aspect) and adverbs (such as "yesterday", "earlier", "tomorrow"), or may be understood from context. Serial verb construction is quite common. + +Khmer verbs are a relatively open class and can be divided into two types, main verbs and auxiliary verbs. Huffman defined a Khmer verb as "any word that can be (negated)", and further divided main verbs into three classes. + +Transitive verbs are verbs that may be followed by a direct object: + +{| +| +| style="width:20%; text-align: center" | +| +|} + +Intransitive verbs are verbs that can not be followed by an object: + +{| +| +| style="width:20%; text-align: center" | +| +|} + +Adjectival verbs are a word class that has no equivalent in English. When modifying a noun or verb, they function as adjectives or adverbs, respectively, but they may also be used as main verbs equivalent to English "be + adjective". + +{| +! +| style="width:20%; text-align: center" | +! +| style="width:20%; text-align: center" | +! +|- +| +| +| +| +| +|} + +Syntax +Syntax is the rules and processes that describe how sentences are formed in a particular language, how words relate to each other within clauses or phrases and how those phrases relate to each other within a sentence to convey meaning. Khmer syntax is very analytic. Relationships between words and phrases are signified primarily by word order supplemented with auxiliary verbs and, particularly in formal and literary registers, grammatical marking particles. Grammatical phenomena such as negation and aspect are marked by particles while interrogative sentences are marked either by particles or interrogative words equivalent to English "wh-words". + +A complete Khmer sentence consists of four basic elements—an optional topic, an optional subject, an obligatory predicate, and various adverbials and particles. The topic and subject are noun phrases, predicates are verb phrases and another noun phrase acting as an object or verbal attribute often follows the predicate. + +Basic constituent order +When combining these noun and verb phrases into a sentence the order is typically SVO: + +{| style="width:25%;" +| || || || || +|- +| || || || +|- +| I || give || banana || one || bunch[] +|- +| colspan=5 | 'I gave a bunch of bananas.' +|} + +When both a direct object and indirect object are present without any grammatical markers, the preferred order is SV(DO)(IO). In such a case, if the direct object phrase contains multiple components, the indirect object immediately follows the noun of the direct object phrase and the direct object's modifiers follow the indirect object: + +{| style="width:25%;" +| || || || || || +|- +| || || || || +|- +| I || give || banana || pig || one || bunch[] +|- +| colspan=6 | 'I gave the pig a bunch of bananas.' +|} + +This ordering of objects can be changed and the meaning clarified with the inclusion of particles. The word , which normally means "to arrive" or "towards", can be used as a preposition meaning "to": +{| style="width:25%;" +| || || || || || || +|- +| I || give || banana || one || bunch[] || toward || pig +|- +| colspan=7 | 'I gave a bunch of bananas to the pigs.' +|} + +Alternatively, the indirect object could precede the direct object if the object-marking preposition were used: +{| style="width:25%;" +| || || || || || || +|- +| I || give || pig || || banana || one || bunch[] +|- +| colspan=7 | 'I gave the pig a bunch of bananas.' +|} + +However, in spoken discourse OSV is possible when emphasizing the object in a topic–comment-like structure. +{| style="width:25%;" +| || || || || +|- +| boat || one || to sit || five || monk[] +|- +| colspan=5 | 'In a boat sit five monks.' +|} +{| style="width:25%;" +| || || || || +|- +| science || thief || to steal || || +|- +| colspan=5 | 'Science, a thief can not steal.' +|} + +Noun phrase +The noun phrase in Khmer typically has the following structure: + = () () () () () +The elements in parentheses are optional. Honorifics are a class of words that serve to index the social status of the referent. Honorifics can be kinship terms or personal names, both of which are often used as first and second person pronouns, or specialized words such as ('god') before royal and religious objects. The most common demonstratives are ('this, these') and ('that, those'). The word ('those over there') has a more distal or vague connotation. + +If the noun phrase contains a possessive adjective, it follows the noun and precedes the numeral. If a descriptive attribute co-occurs with a possessive, the possessive construction () is expected. + +Some examples of typical Khmer noun phrases are: +{| class="wikitable" +|- +! Khmer text !! IPA !! gloss !! translation +|- +| || || house high three four spine[] these || 'these three or four high houses' +|- +| || || banana ripe two bunches[] these || these two bunches of ripe bananas +|- +| || || friend I two person[] these || these two friends of mine +|- +| || || friend small of I two person[] these || these two small friends of mine +|} + +The Khmer particle marked attributes in Old Khmer noun phrases and is used in formal and literary language to signify that what precedes is the noun and what follows is the attribute. Modern usage may carry the connotation of mild intensity. + +{| style="width:25%;" +| || || || +|- +| field || paddy || || vast +|- +| colspan=4 | '(very) expansive fields and paddies' +|} + +Verb phrase +Khmer verbs are completely uninflected, and once a subject or topic has been introduced or is clear from context the noun phrase may be dropped. Thus, the simplest possible sentence in Khmer consists of a single verb. For example, 'to go' on its own can mean "I'm going.", "He went.", "They've gone.", "Let's go.", etc. This also results in long strings of verbs such as: +{| style="width:25%;" +| || || || || +|- +| I || to want || to go || to walk || to play +|- +| colspan=5 | 'I want to go for a stroll.' +|} + +Khmer uses three verbs for what translates into English as the copula. The general copula is ; it is used to convey identity with nominal predicates. For locative predicates, the copula is . The verb is the "existential" copula meaning "there is" or "there exists". +{| style="width:35%;" +| || || || || || || || +|- +| language || || || to express || heart || thought || all || kind +|- +| colspan=8 | 'Language is the expression of all emotions and ideas' +|} +{| style="text-align: left;" +| || || || || style="width:30%; text-align: center" |   || || +|- +| he || || close || temple || style="width:30%; text-align: center" |   || to exist || plan +|- +| colspan=4 | 'He is close to the temple.' || style="width:30%; text-align: center" |   || colspan=2 | 'There is a plan.' +|} + +Negation is achieved by putting before the verb and the particle at the end of the sentence or clause. In colloquial speech, verbs can also be negated without the need for a final particle, by placing before them. +{| style="text-align: left;" +| || || style="width:15%; text-align: center" |   || || || || || style="width:15%; text-align: center" |   || || || +|- +| I || to believe || style="width:15%; text-align: center" |   || I || || to believe || || style="width:15%; text-align: center" |   || I || || to believe +|- +| colspan=2 | 'I believe.' || style="width:15%; text-align: center" |   || colspan=4 | 'I don't believe.' || style="width:15%; text-align: center" |   || colspan=3 | 'I don't believe.' +|} + +Past tense can be conveyed by adverbs, such as "yesterday" or by the use of perfective particles such as +{| style="text-align: left;" +| || || || style="width:30%; text-align: center" |   || || || +|- +| he || to go || yesterday || style="width:30%; text-align: center" |   || he || to go || +|- +| colspan=3 | 'He went yesterday.' || style="width:30%; text-align: center" |   || colspan=3 | 'He left.' or 'He's already gone.' +|} + +Different senses of future action can also be expressed by the use of adverbs like "tomorrow" or by the future tense marker , which is placed immediately before the verb, or both: +{| style="width:35%;" +| || || || || +|- +| tomorrow || I || || to go || school +|- +| colspan=5 | 'Tomorrow, I will go to school.' +|} + +Imperatives are often unmarked. For example, in addition to the meanings given above, the "sentence" can also mean "Go!". Various words and particles may be added to the verb to soften the command to varying degrees, including to the point of politeness (jussives): +{| style="text-align: left;" +| || || || || || || style="width:30%; text-align: center" |   || || || || || || +|- +| || try || try || you || || || style="width:30%; text-align: center" |   || please || do || follow || instruction || he || +|- +| colspan=6 | 'Go ahead and try it yourself.' || style="width:30%; text-align: center" |   || colspan=6 | 'Please follow his instructions.' +|} + +Prohibitives take the form " + " and also are often softened by the addition of the particle to the end of the phrase. +{| style="width:35%;" +| || || || || +|- +| || to be || place || || +|- +| colspan=5 | 'Don't stay in this place.' +|} + +Questions +There are three basic types of questions in Khmer. Questions requesting specific information use question words. Polar questions are indicated with interrogative particles, most commonly , a homonym of the negation particle. Tag questions are indicated with various particles and rising inflection. The SVO word order is generally not inverted for questions. + +{| style="text-align: left;" +| || || || style="width:10%; text-align: center" |   || || || || || style="width:10%; text-align: center" |   || || || || || || +|- +| you || to go || where || style="width:10%; text-align: center" |   || you || understand || || || style="width:10%; text-align: center" |   || you || to go || market || || or || yet +|- +| colspan=3 | 'Where are you going?' || style="width:10%; text-align: center" |   || colspan=4 | 'Can you understand?' || style="width:10%; text-align: center" |   || colspan=7 | 'Have you gone to the store yet?' +|} + +In more formal contexts and in polite speech, questions are also marked at their beginning by the particle . + +{| style="width:25%;" +| || || || || +|- +| || you || to invite || to go || where +|- +| colspan=5 | 'Where are you going, sir?' +|} + +Passive voice +Khmer does not have a passive voice, but there is a construction utilizing the main verb ("to hit", "to be correct", "to affect") as an auxiliary verb meaning "to be subject to" or "to undergo"—which results in sentences that are translated to English using the passive voice. +{| style="width:25%;" +| || || || || || +|- +| from || yesterday || I || to undergo || dog || to bite +|- +| colspan=6 | 'Yesterday I was bitten by a dog.' +|} + +Clause syntax +Complex sentences are formed in Khmer by the addition of one or more clauses to the main clause. The various types of clauses in Khmer include the coordinate clause, the relative clause and the subordinate clause. Word order in clauses is the same for that of the basic sentences described above. Coordinate clauses do not necessarily have to be marked; they can simply follow one another. When explicitly marked, they are joined by words similar to English conjunctions such as ("and") and ("and then") or by clause-final conjunction-like adverbs and , both of which can mean "also" or "and also"; disjunction is indicated by ("or"). + +Relative clauses can be introduced by ("that") but, similar to coordinate clauses, often simply follow the main clause. For example, both phrases below can mean "the hospital bed that has wheels". +{| style="text-align: left;" +| || || || || || style="width:20%; text-align: center" |   || || || || || || +|- +| bed || hospital || have || wheel || to push || style="width:20%; text-align: center" |   || bed || hospital || || have || wheel || to push +|} + +Relative clauses are more likely to be introduced with if they do not immediately follow the head noun. Khmer subordinate conjunctions always precede a subordinate clause. Subordinate conjunctions include words such as ("because"), ("seems as if") and ("in order to"). + +Numerals + +Counting in Khmer is based on a biquinary system: the numbers from 6 to 9 have the form "five one", "five two", etc. The words for multiples of ten from 30 to 90 are not related to the basic Khmer numbers, but are Chinese in origin, and probably came to Khmer via Thai. Khmer numerals, which were inherited directly from Indian numerals, are used more widely than Western numerals, which like Khmer numerals were inherited from Indian, but first passed through the Arabic numerals before reaching the west. + +The principal number words are listed in the following table, which gives Western and Khmer digits, Khmer spelling and IPA transcription. + +Intermediate numbers are formed by compounding the above elements. Powers of ten are denoted by loan words: (100), (1,000), (10,000), (100,000) and (1,000,000) from Thai and (10,000,000) from Sanskrit. + +Ordinal numbers are formed by placing the particle before the corresponding cardinal number. + +Social registers +Khmer employs a system of registers in which the speaker must always be conscious of the social status of the person spoken to. The different registers, which include those used for common speech, polite speech, speaking to or about royals and speaking to or about monks, employ alternate verbs, names of body parts and pronouns. As an example, the word for "to eat" used between intimates or in reference to animals is . Used in polite reference to commoners, it is . When used of those of higher social status, it is or . For monks the word is and for royals, . Another result is that the pronominal system is complex and full of honorific variations, just a few of which are shown in the table below. + +Writing system + +Khmer is written with the Khmer script, an abugida developed from the Pallava script of India before the 7th century when the first known inscription appeared. Written left-to-right with vowel signs that can be placed after, before, above or below the consonant they follow, the Khmer script is similar in appearance and usage to Thai and Lao, both of which were based on the Khmer system. The Khmer script is also distantly related to the Mon–Burmese script. Within Cambodia, literacy in the Khmer alphabet is estimated at 77.6%. + +Consonant symbols in Khmer are divided into two groups, or series. The first series carries the inherent vowel while the second series carries the inherent vowel . The Khmer names of the series, ('voiceless') and ('voiced'), respectively, indicate that the second series consonants were used to represent the voiced phonemes of Old Khmer. As the voicing of stops was lost, however, the contrast shifted to the phonation of the attached vowels, which, in turn, evolved into a simple difference of vowel quality, often by diphthongization. This process has resulted in the Khmer alphabet having two symbols for most consonant phonemes and each vowel symbol having two possible readings, depending on the series of the initial consonant: + +Examples + +The following text is from Article 1 of the Universal Declaration of Human Rights. + +See also + + Hem Chieu + Khmer literature + Romanization of Khmer + +References and notes + +Further reading + + Ferlus, Michel. (1992). Essai de phonétique historique du khmer (Du milieu du premier millénaire de notre ère à l'époque actuelle)", Mon–Khmer Studies XXI: 57–89) + Headley, Robert and others. (1977). Cambodian-English Dictionary. Washington, Catholic University Press. + Herington, Jennifer and Amy Ryan. (2013). Sociolinguistic Survey of the Khmer Khe in Cambodia . Chiang Mai: Linguistics Institute, Payap University. + Huffman, F. E., Promchan, C., & Lambert, C.-R. T. (1970). Modern spoken Cambodian. New Haven: Yale University Press. + Huffman, F. E., Lambert, C.-R. T., & Im Proum. (1970). Cambodian system of writing and beginning reader with drills and glossary. Yale linguistic series. New Haven: Yale University Press. + Jacob, Judith. (1966). 'Some features of Khmer versification', in C. E. Bazell, J. C. Catford, M. A. K. Halliday, and R. H. Robins, eds., In Memory of J. R Firth, 227–41. London: Longman. [Includes discussion of the two series of syllables and their places in Khmer shymes] + Jacob, Judith. (1974). A Concise Cambodian-English Dictionary. London, Oxford University Press. + Jacob, J. M. (1996). The traditional literature of Cambodia: a preliminary guide. London oriental series, v. 40. New York: Oxford University Press. + Jacob, J. M., & Smyth, D. (1993). Cambodian linguistics, literature and history: collected articles. London: School of Oriental and African Studies, University of London. + Keesee, A. P. K. (1996). An English-spoken Khmer dictionary: with romanized writing system, usage, and idioms, and notes on Khmer speech and grammar. London: Kegan Paul International. + Meechan, M. (1992). Register in Khmer the laryngeal specification of pharyngeal expansion. Ottawa: National Library of Canada = Bibliothèque nationale du Canada. + Sak-Humphry, C. (2002). Communicating in Khmer: an interactive intermediate level Khmer course. Manoa, Hawai'i: Center for Southeast Asian Studies, School of Hawaiian, Asian and Pacific Studies, University of Hawai'i at Manoa. OCLC: 56840636 + Smyth, D. (1995). Colloquial Cambodian: a complete language course. London: Routledge. + Stewart, F., & May, S. (2004). In the shadow of Angkor: contemporary writing from Cambodia. Honolulu: University of Hawai'i Press. + Tonkin, D. (1991). The Cambodian alphabet: how to write the Khmer language. Bangkok: Trasvin Publications. + +External links + + Kheng.info—An online audio dictionary for learning Khmer, with thousands of native speaker recordings and text segmentation software. + SEAlang Project: Mon–Khmer languages. The Khmeric Branch + Khmer Swadesh vocabulary list (from Wiktionary's Swadesh-list appendix) + Dictionary and SpellChecker open sourced and collaborative project based on Chuon Nath Khmer Dictionary + How to install Khmer script on a Windows 7 computer + How to install Khmer script on a Windows XP computer + Khmer'' at UCLA Language Materials project + Online Khmer & English dictionary + Khmer Online Dictionaries + Khmer audio lessons at Wikiotics + http://unicode-table.com/en/sections/khmer/ + http://unicode-table.com/en/sections/khmer-symbols/ + + +Languages attested from the 9th century +Analytic languages +Isolating languages +Languages of Cambodia +Languages of Thailand +Languages of Vietnam +Subject–verb–object languages +A central processing unit (CPU)—also called a central processor or main processor—is the most important processor in a given computer. Its electronic circuitry executes instructions of a computer program, such as arithmetic, logic, controlling, and input/output (I/O) operations. This role contrasts with that of external components, such as main memory and I/O circuitry, and specialized coprocessors such as graphics processing units (GPUs). + +The form, design, and implementation of CPUs have changed over time, but their fundamental operation remains almost unchanged. Principal components of a CPU include the arithmetic–logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations, and a control unit that orchestrates the fetching (from memory), decoding and execution (of instructions) by directing the coordinated operations of the ALU, registers, and other components. + +Most modern CPUs are implemented on integrated circuit (IC) microprocessors, with one or more CPUs on a single IC chip. Microprocessor chips with multiple CPUs are multi-core processors. The individual physical CPUs, processor cores, can also be multithreaded to create additional virtual or logical CPUs. + +An IC that contains a CPU may also contain memory, peripheral interfaces, and other components of a computer; such integrated devices are variously called microcontrollers or systems on a chip (SoC). + +Array processors or vector processors have multiple processors that operate in parallel, with no unit considered central. Virtual CPUs are an abstraction of dynamically aggregated computational resources. + +History + +Early computers such as the ENIAC had to be physically rewired to perform different tasks, which caused these machines to be called "fixed-program computers". The "central processing unit" term has been in use since as early as 1955. Since the term "CPU" is generally defined as a device for software (computer program) execution, the earliest devices that could rightly be called CPUs came with the advent of the stored-program computer. + +The idea of a stored-program computer had been already present in the design of J. Presper Eckert and John William Mauchly's ENIAC, but was initially omitted so that ENIAC could be finished sooner. On June 30, 1945, before ENIAC was made, mathematician John von Neumann distributed a paper entitled First Draft of a Report on the EDVAC. It was the outline of a stored-program computer that would eventually be completed in August 1949. EDVAC was designed to perform a certain number of instructions (or operations) of various types. Significantly, the programs written for EDVAC were to be stored in high-speed computer memory rather than specified by the physical wiring of the computer. This overcame a severe limitation of ENIAC, which was the considerable time and effort required to reconfigure the computer to perform a new task. With von Neumann's design, the program that EDVAC ran could be changed simply by changing the contents of the memory. EDVAC was not the first stored-program computer; the Manchester Baby, which was a small-scale experimental stored-program computer, ran its first program on 21 June 1948 and the Manchester Mark 1 ran its first program during the night of 16–17 June 1949. + +Early CPUs were custom designs used as part of a larger and sometimes distinctive computer. However, this method of designing custom CPUs for a particular application has largely given way to the development of multi-purpose processors produced in large quantities. This standardization began in the era of discrete transistor mainframes and minicomputers, and has rapidly accelerated with the popularization of the integrated circuit (IC). The IC has allowed increasingly complex CPUs to be designed and manufactured to tolerances on the order of nanometers. Both the miniaturization and standardization of CPUs have increased the presence of digital devices in modern life far beyond the limited application of dedicated computing machines. Modern microprocessors appear in electronic devices ranging from automobiles to cellphones, and sometimes even in toys. + +While von Neumann is most often credited with the design of the stored-program computer because of his design of EDVAC, and the design became known as the von Neumann architecture, others before him, such as Konrad Zuse, had suggested and implemented similar ideas. The so-called Harvard architecture of the Harvard Mark I, which was completed before EDVAC, also used a stored-program design using punched paper tape rather than electronic memory. The key difference between the von Neumann and Harvard architectures is that the latter separates the storage and treatment of CPU instructions and data, while the former uses the same memory space for both. Most modern CPUs are primarily von Neumann in design, but CPUs with the Harvard architecture are seen as well, especially in embedded applications; for instance, the Atmel AVR microcontrollers are Harvard-architecture processors. + +Relays and vacuum tubes (thermionic tubes) were commonly used as switching elements; a useful computer requires thousands or tens of thousands of switching devices. The overall speed of a system is dependent on the speed of the switches. Vacuum-tube computers such as EDVAC tended to average eight hours between failures, whereas relay computers—such as the slower but earlier Harvard Mark I—failed very rarely. In the end, tube-based CPUs became dominant because the significant speed advantages afforded generally outweighed the reliability problems. Most of these early synchronous CPUs ran at low clock rates compared to modern microelectronic designs. Clock signal frequencies ranging from 100 kHz to 4 MHz were very common at this time, limited largely by the speed of the switching devices they were built with. + +Transistor CPUs + +The design complexity of CPUs increased as various technologies facilitated the building of smaller and more reliable electronic devices. The first such improvement came with the advent of the transistor. Transistorized CPUs during the 1950s and 1960s no longer had to be built out of bulky, unreliable, and fragile switching elements, like vacuum tubes and relays. With this improvement, more complex and reliable CPUs were built onto one or several printed circuit boards containing discrete (individual) components. + +In 1964, IBM introduced its IBM System/360 computer architecture that was used in a series of computers capable of running the same programs with different speeds and performances. This was significant at a time when most electronic computers were incompatible with one another, even those made by the same manufacturer. To facilitate this improvement, IBM used the concept of a microprogram (often called "microcode"), which still sees widespread use in modern CPUs. The System/360 architecture was so popular that it dominated the mainframe computer market for decades and left a legacy that is continued by similar modern computers like the IBM zSeries. In 1965, Digital Equipment Corporation (DEC) introduced another influential computer aimed at the scientific and research markets—the PDP-8. + +Transistor-based computers had several distinct advantages over their predecessors. Aside from facilitating increased reliability and lower power consumption, transistors also allowed CPUs to operate at much higher speeds because of the short switching time of a transistor in comparison to a tube or relay. The increased reliability and dramatically increased speed of the switching elements, which were almost exclusively transistors by this time; CPU clock rates in the tens of megahertz were easily obtained during this period. Additionally, while discrete transistor and IC CPUs were in heavy usage, new high-performance designs like single instruction, multiple data (SIMD) vector processors began to appear. These early experimental designs later gave rise to the era of specialized supercomputers like those made by Cray Inc and Fujitsu Ltd. + +Small-scale integration CPUs + +During this period, a method of manufacturing many interconnected transistors in a compact space was developed. The integrated circuit (IC) allowed a large number of transistors to be manufactured on a single semiconductor-based die, or "chip". At first, only very basic non-specialized digital circuits such as NOR gates were miniaturized into ICs. CPUs based on these "building block" ICs are generally referred to as "small-scale integration" (SSI) devices. SSI ICs, such as the ones used in the Apollo Guidance Computer, usually contained up to a few dozen transistors. To build an entire CPU out of SSI ICs required thousands of individual chips, but still consumed much less space and power than earlier discrete transistor designs. + +IBM's System/370, follow-on to the System/360, used SSI ICs rather than Solid Logic Technology discrete-transistor modules. DEC's PDP-8/I and KI10 PDP-10 also switched from the individual transistors used by the PDP-8 and PDP-10 to SSI ICs, and their extremely popular PDP-11 line was originally built with SSI ICs, but was eventually implemented with LSI components once these became practical. + +Large-scale integration CPUs +Lee Boysel published influential articles, including a 1967 "manifesto", which described how to build the equivalent of a 32-bit mainframe computer from a relatively small number of large-scale integration circuits (LSI). The only way to build LSI chips, which are chips with a hundred or more gates, was to build them using a metal–oxide–semiconductor (MOS) semiconductor manufacturing process (either PMOS logic, NMOS logic, or CMOS logic). However, some companies continued to build processors out of bipolar transistor–transistor logic (TTL) chips because bipolar junction transistors were faster than MOS chips up until the 1970s (a few companies such as Datapoint continued to build processors out of TTL chips until the early 1980s). In the 1960s, MOS ICs were slower and initially considered useful only in applications that required low power. Following the development of silicon-gate MOS technology by Federico Faggin at Fairchild Semiconductor in 1968, MOS ICs largely replaced bipolar TTL as the standard chip technology in the early 1970s. + +As the microelectronic technology advanced, an increasing number of transistors were placed on ICs, decreasing the number of individual ICs needed for a complete CPU. MSI and LSI ICs increased transistor counts to hundreds, and then thousands. By 1968, the number of ICs required to build a complete CPU had been reduced to 24 ICs of eight different types, with each IC containing roughly 1000 MOSFETs. In stark contrast with its SSI and MSI predecessors, the first LSI implementation of the PDP-11 contained a CPU composed of only four LSI integrated circuits. + +Microprocessors + +Since microprocessors were first introduced they have almost completely overtaken all other central processing unit implementation methods. The first commercially available microprocessor, made in 1971, was the Intel 4004, and the first widely used microprocessor, made in 1974, was the Intel 8080. Mainframe and minicomputer manufacturers of the time launched proprietary IC development programs to upgrade their older computer architectures, and eventually produced instruction set compatible microprocessors that were backward-compatible with their older hardware and software. Combined with the advent and eventual success of the ubiquitous personal computer, the term CPU is now applied almost exclusively to microprocessors. Several CPUs (denoted cores) can be combined in a single processing chip. + +Previous generations of CPUs were implemented as discrete components and numerous small integrated circuits (ICs) on one or more circuit boards. Microprocessors, on the other hand, are CPUs manufactured on a very small number of ICs; usually just one. The overall smaller CPU size, as a result of being implemented on a single die, means faster switching time because of physical factors like decreased gate parasitic capacitance. This has allowed synchronous microprocessors to have clock rates ranging from tens of megahertz to several gigahertz. Additionally, the ability to construct exceedingly small transistors on an IC has increased the complexity and number of transistors in a single CPU many fold. This widely observed trend is described by Moore's law, which had proven to be a fairly accurate predictor of the growth of CPU (and other IC) complexity until 2016. + +While the complexity, size, construction and general form of CPUs have changed enormously since 1950, the basic design and function has not changed much at all. Almost all common CPUs today can be very accurately described as von Neumann stored-program machines. As Moore's law no longer holds, concerns have arisen about the limits of integrated circuit transistor technology. Extreme miniaturization of electronic gates is causing the effects of phenomena like electromigration and subthreshold leakage to become much more significant. These newer concerns are among the many factors causing researchers to investigate new methods of computing such as the quantum computer, as well as to expand the use of parallelism and other methods that extend the usefulness of the classical von Neumann model. + +Operation +The fundamental operation of most CPUs, regardless of the physical form they take, is to execute a sequence of stored instructions that is called a program. The instructions to be executed are kept in some kind of computer memory. Nearly all CPUs follow the fetch, decode and execute steps in their operation, which are collectively known as the instruction cycle. + +After the execution of an instruction, the entire process repeats, with the next instruction cycle normally fetching the next-in-sequence instruction because of the incremented value in the program counter. If a jump instruction was executed, the program counter will be modified to contain the address of the instruction that was jumped to and program execution continues normally. In more complex CPUs, multiple instructions can be fetched, decoded and executed simultaneously. This section describes what is generally referred to as the "classic RISC pipeline", which is quite common among the simple CPUs used in many electronic devices (often called microcontrollers). It largely ignores the important role of CPU cache, and therefore the access stage of the pipeline. + +Some instructions manipulate the program counter rather than producing result data directly; such instructions are generally called "jumps" and facilitate program behavior like loops, conditional program execution (through the use of a conditional jump), and existence of functions. In some processors, some other instructions change the state of bits in a "flags" register. These flags can be used to influence how a program behaves, since they often indicate the outcome of various operations. For example, in such processors a "compare" instruction evaluates two values and sets or clears bits in the flags register to indicate which one is greater or whether they are equal; one of these flags could then be used by a later jump instruction to determine program flow. + +Fetch +Fetch involves retrieving an instruction (which is represented by a number or sequence of numbers) from program memory. The instruction's location (address) in program memory is determined by the program counter (PC; called the "instruction pointer" in Intel x86 microprocessors), which stores a number that identifies the address of the next instruction to be fetched. After an instruction is fetched, the PC is incremented by the length of the instruction so that it will contain the address of the next instruction in the sequence. Often, the instruction to be fetched must be retrieved from relatively slow memory, causing the CPU to stall while waiting for the instruction to be returned. This issue is largely addressed in modern processors by caches and pipeline architectures (see below). + +Decode + +The instruction that the CPU fetches from memory determines what the CPU will do. In the decode step, performed by binary decoder circuitry known as the instruction decoder, the instruction is converted into signals that control other parts of the CPU. + +The way in which the instruction is interpreted is defined by the CPU's instruction set architecture (ISA). Often, one group of bits (that is, a "field") within the instruction, called the opcode, indicates which operation is to be performed, while the remaining fields usually provide supplemental information required for the operation, such as the operands. Those operands may be specified as a constant value (called an immediate value), or as the location of a value that may be a processor register or a memory address, as determined by some addressing mode. + +In some CPU designs the instruction decoder is implemented as a hardwired, unchangeable binary decoder circuit. In others, a microprogram is used to translate instructions into sets of CPU configuration signals that are applied sequentially over multiple clock pulses. In some cases the memory that stores the microprogram is rewritable, making it possible to change the way in which the CPU decodes instructions. + +Execute +After the fetch and decode steps, the execute step is performed. Depending on the CPU architecture, this may consist of a single action or a sequence of actions. During each action, control signals electrically enable or disable various parts of the CPU so they can perform all or part of the desired operation. The action is then completed, typically in response to a clock pulse. Very often the results are written to an internal CPU register for quick access by subsequent instructions. In other cases results may be written to slower, but less expensive and higher capacity main memory. + +For example, if an instruction that performs addition is to be executed, registers containing operands (numbers to be summed) are activated, as are the parts of the arithmetic logic unit (ALU) that perform addition. When the clock pulse occurs, the operands flow from the source registers into the ALU, and the sum appears at its output. On subsequent clock pulses, other components are enabled (and disabled) to move the output (the sum of the operation) to storage (e.g., a register or memory). If the resulting sum is too large (i.e., it is larger than the ALU's output word size), an arithmetic overflow flag will be set, influencing the next operation. + +Structure and implementation + +Hardwired into a CPU's circuitry is a set of basic operations it can perform, called an instruction set. Such operations may involve, for example, adding or subtracting two numbers, comparing two numbers, or jumping to a different part of a program. Each instruction is represented by a unique combination of bits, known as the machine language opcode. While processing an instruction, the CPU decodes the opcode (via a binary decoder) into control signals, which orchestrate the behavior of the CPU. A complete machine language instruction consists of an opcode and, in many cases, additional bits that specify arguments for the operation (for example, the numbers to be summed in the case of an addition operation). Going up the complexity scale, a machine language program is a collection of machine language instructions that the CPU executes. + +The actual mathematical operation for each instruction is performed by a combinational logic circuit within the CPU's processor known as the arithmetic–logic unit or ALU. In general, a CPU executes an instruction by fetching it from memory, using its ALU to perform an operation, and then storing the result to memory. Besides the instructions for integer mathematics and logic operations, various other machine instructions exist, such as those for loading data from memory and storing it back, branching operations, and mathematical operations on floating-point numbers performed by the CPU's floating-point unit (FPU). + +Control unit + +The control unit (CU) is a component of the CPU that directs the operation of the processor. It tells the computer's memory, arithmetic and logic unit and input and output devices how to respond to the instructions that have been sent to the processor. + +It directs the operation of the other units by providing timing and control signals. Most computer resources are managed by the CU. It directs the flow of data between the CPU and the other devices. John von Neumann included the control unit as part of the von Neumann architecture. In modern computer designs, the control unit is typically an internal part of the CPU with its overall role and operation unchanged since its introduction. + +Arithmetic logic unit + +The arithmetic logic unit (ALU) is a digital circuit within the processor that performs integer arithmetic and bitwise logic operations. The inputs to the ALU are the data words to be operated on (called operands), status information from previous operations, and a code from the control unit indicating which operation to perform. Depending on the instruction being executed, the operands may come from internal CPU registers, external memory, or constants generated by the ALU itself. + +When all input signals have settled and propagated through the ALU circuitry, the result of the performed operation appears at the ALU's outputs. The result consists of both a data word, which may be stored in a register or memory, and status information that is typically stored in a special, internal CPU register reserved for this purpose. + +Address generation unit + +The address generation unit (AGU), sometimes also called the address computation unit (ACU), is an execution unit inside the CPU that calculates addresses used by the CPU to access main memory. By having address calculations handled by separate circuitry that operates in parallel with the rest of the CPU, the number of CPU cycles required for executing various machine instructions can be reduced, bringing performance improvements. + +While performing various operations, CPUs need to calculate memory addresses required for fetching data from the memory; for example, in-memory positions of array elements must be calculated before the CPU can fetch the data from actual memory locations. Those address-generation calculations involve different integer arithmetic operations, such as addition, subtraction, modulo operations, or bit shifts. Often, calculating a memory address involves more than one general-purpose machine instruction, which do not necessarily decode and execute quickly. By incorporating an AGU into a CPU design, together with introducing specialized instructions that use the AGU, various address-generation calculations can be offloaded from the rest of the CPU, and can often be executed quickly in a single CPU cycle. + +Capabilities of an AGU depend on a particular CPU and its architecture. Thus, some AGUs implement and expose more address-calculation operations, while some also include more advanced specialized instructions that can operate on multiple operands at a time. Some CPU architectures include multiple AGUs so more than one address-calculation operation can be executed simultaneously, which brings further performance improvements due to the superscalar nature of advanced CPU designs. For example, Intel incorporates multiple AGUs into its Sandy Bridge and Haswell microarchitectures, which increase bandwidth of the CPU memory subsystem by allowing multiple memory-access instructions to be executed in parallel. + +Memory management unit (MMU) + +Many microprocessors (in smartphones and desktop, laptop, server computers) have a memory management unit, translating logical addresses into physical RAM addresses, providing memory protection and paging abilities, useful for virtual memory. Simpler processors, especially microcontrollers, usually don't include an MMU. + +Cache +A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory. A cache is a smaller, faster memory, closer to a processor core, which stores copies of the data from frequently used main memory locations. Most CPUs have different independent caches, including instruction and data caches, where the data cache is usually organized as a hierarchy of more cache levels (L1, L2, L3, L4, etc.). + +All modern (fast) CPUs (with few specialized exceptions) have multiple levels of CPU caches. The first CPUs that used a cache had only one level of cache; unlike later level 1 caches, it was not split into L1d (for data) and L1i (for instructions). Almost all current CPUs with caches have a split L1 cache. They also have L2 caches and, for larger processors, L3 caches as well. The L2 cache is usually not split and acts as a common repository for the already split L1 cache. Every core of a multi-core processor has a dedicated L2 cache and is usually not shared between the cores. The L3 cache, and higher-level caches, are shared between the cores and are not split. An L4 cache is currently uncommon, and is generally on dynamic random-access memory (DRAM), rather than on static random-access memory (SRAM), on a separate die or chip. That was also the case historically with L1, while bigger chips have allowed integration of it and generally all cache levels, with the possible exception of the last level. Each extra level of cache tends to be bigger and is optimized differently. + +Other types of caches exist (that are not counted towards the "cache size" of the most important caches mentioned above), such as the translation lookaside buffer (TLB) that is part of the memory management unit (MMU) that most CPUs have. + +Caches are generally sized in powers of two: 2, 8, 16 etc. KiB or MiB (for larger non-L1) sizes, although the IBM z13 has a 96 KiB L1 instruction cache. + +Clock rate + +Most CPUs are synchronous circuits, which means they employ a clock signal to pace their sequential operations. The clock signal is produced by an external oscillator circuit that generates a consistent number of pulses each second in the form of a periodic square wave. The frequency of the clock pulses determines the rate at which a CPU executes instructions and, consequently, the faster the clock, the more instructions the CPU will execute each second. + +To ensure proper operation of the CPU, the clock period is longer than the maximum time needed for all signals to propagate (move) through the CPU. In setting the clock period to a value well above the worst-case propagation delay, it is possible to design the entire CPU and the way it moves data around the "edges" of the rising and falling clock signal. This has the advantage of simplifying the CPU significantly, both from a design perspective and a component-count perspective. However, it also carries the disadvantage that the entire CPU must wait on its slowest elements, even though some portions of it are much faster. This limitation has largely been compensated for by various methods of increasing CPU parallelism (see below). + +However, architectural improvements alone do not solve all of the drawbacks of globally synchronous CPUs. For example, a clock signal is subject to the delays of any other electrical signal. Higher clock rates in increasingly complex CPUs make it more difficult to keep the clock signal in phase (synchronized) throughout the entire unit. This has led many modern CPUs to require multiple identical clock signals to be provided to avoid delaying a single signal significantly enough to cause the CPU to malfunction. Another major issue, as clock rates increase dramatically, is the amount of heat that is dissipated by the CPU. The constantly changing clock causes many components to switch regardless of whether they are being used at that time. In general, a component that is switching uses more energy than an element in a static state. Therefore, as clock rate increases, so does energy consumption, causing the CPU to require more heat dissipation in the form of CPU cooling solutions. + +One method of dealing with the switching of unneeded components is called clock gating, which involves turning off the clock signal to unneeded components (effectively disabling them). However, this is often regarded as difficult to implement and therefore does not see common usage outside of very low-power designs. One notable recent CPU design that uses extensive clock gating is the IBM PowerPC-based Xenon used in the Xbox 360; reducing the power requirements of the Xbox 360. + +Clockless CPUs +Another method of addressing some of the problems with a global clock signal is the removal of the clock signal altogether. While removing the global clock signal makes the design process considerably more complex in many ways, asynchronous (or clockless) designs carry marked advantages in power consumption and heat dissipation in comparison with similar synchronous designs. While somewhat uncommon, entire asynchronous CPUs have been built without using a global clock signal. Two notable examples of this are the ARM compliant AMULET and the MIPS R3000 compatible MiniMIPS. + +Rather than totally removing the clock signal, some CPU designs allow certain portions of the device to be asynchronous, such as using asynchronous ALUs in conjunction with superscalar pipelining to achieve some arithmetic performance gains. While it is not altogether clear whether totally asynchronous designs can perform at a comparable or better level than their synchronous counterparts, it is evident that they do at least excel in simpler math operations. This, combined with their excellent power consumption and heat dissipation properties, makes them very suitable for embedded computers. + +Voltage regulator module + +Many modern CPUs have a die-integrated power managing module which regulates on-demand voltage supply to the CPU circuitry allowing it to keep balance between performance and power consumption. + +Integer range +Every CPU represents numerical values in a specific way. For example, some early digital computers represented numbers as familiar decimal (base 10) numeral system values, and others have employed more unusual representations such as ternary (base three). Nearly all modern CPUs represent numbers in binary form, with each digit being represented by some two-valued physical quantity such as a "high" or "low" voltage. + +Related to numeric representation is the size and precision of integer numbers that a CPU can represent. In the case of a binary CPU, this is measured by the number of bits (significant digits of a binary encoded integer) that the CPU can process in one operation, which is commonly called word size, bit width, data path width, integer precision, or integer size. A CPU's integer size determines the range of integer values on which it can it can directly operate. For example, an 8-bit CPU can directly manipulate integers represented by eight bits, which have a range of 256 (28) discrete integer values. + +Integer range can also affect the number of memory locations the CPU can directly address (an address is an integer value representing a specific memory location). For example, if a binary CPU uses 32 bits to represent a memory address then it can directly address 232 memory locations. To circumvent this limitation and for various other reasons, some CPUs use mechanisms (such as bank switching) that allow additional memory to be addressed. + +CPUs with larger word sizes require more circuitry and consequently are physically larger, cost more and consume more power (and therefore generate more heat). As a result, smaller 4- or 8-bit microcontrollers are commonly used in modern applications even though CPUs with much larger word sizes (such as 16, 32, 64, even 128-bit) are available. When higher performance is required, however, the benefits of a larger word size (larger data ranges and address spaces) may outweigh the disadvantages. A CPU can have internal data paths shorter than the word size to reduce size and cost. For example, even though the IBM System/360 instruction set architecture was a 32-bit instruction set, the System/360 Model 30 and Model 40 had 8-bit data paths in the arithmetic logical unit, so that a 32-bit add required four cycles, one for each 8 bits of the operands, and, even though the Motorola 68000 series instruction set was a 32-bit instruction set, the Motorola 68000 and Motorola 68010 had 16-bit data paths in the arithmetic logical unit, so that a 32-bit add required two cycles. + +To gain some of the advantages afforded by both lower and higher bit lengths, many instruction sets have different bit widths for integer and floating-point data, allowing CPUs implementing that instruction set to have different bit widths for different portions of the device. For example, the IBM System/360 instruction set was primarily 32 bit, but supported 64-bit floating-point values to facilitate greater accuracy and range in floating-point numbers. The System/360 Model 65 had an 8-bit adder for decimal and fixed-point binary arithmetic and a 60-bit adder for floating-point arithmetic. Many later CPU designs use similar mixed bit width, especially when the processor is meant for general-purpose use where a reasonable balance of integer and floating-point capability is required. + +Parallelism + +The description of the basic operation of a CPU offered in the previous section describes the simplest form that a CPU can take. This type of CPU, usually referred to as subscalar, operates on and executes one instruction on one or two pieces of data at a time, that is less than one instruction per clock cycle (). + +This process gives rise to an inherent inefficiency in subscalar CPUs. Since only one instruction is executed at a time, the entire CPU must wait for that instruction to complete before proceeding to the next instruction. As a result, the subscalar CPU gets "hung up" on instructions which take more than one clock cycle to complete execution. Even adding a second execution unit (see below) does not improve performance much; rather than one pathway being hung up, now two pathways are hung up and the number of unused transistors is increased. This design, wherein the CPU's execution resources can operate on only one instruction at a time, can only possibly reach scalar performance (one instruction per clock cycle, ). However, the performance is nearly always subscalar (less than one instruction per clock cycle, ). + +Attempts to achieve scalar and better performance have resulted in a variety of design methodologies that cause the CPU to behave less linearly and more in parallel. When referring to parallelism in CPUs, two terms are generally used to classify these design techniques: + instruction-level parallelism (ILP), which seeks to increase the rate at which instructions are executed within a CPU (that is, to increase the use of on-die execution resources); + task-level parallelism (TLP), which purposes to increase the number of threads or processes that a CPU can execute simultaneously. + +Each methodology differs both in the ways in which they are implemented, as well as the relative effectiveness they afford in increasing the CPU's performance for an application. + +Instruction-level parallelism + +One of the simplest methods for increased parallelism is to begin the first steps of instruction fetching and decoding before the prior instruction finishes executing. This is a technique known as instruction pipelining, and is used in almost all modern general-purpose CPUs. Pipelining allows multiple instruction to be executed at a time by breaking the execution pathway into discrete stages. This separation can be compared to an assembly line, in which an instruction is made more complete at each stage until it exits the execution pipeline and is retired. + +Pipelining does, however, introduce the possibility for a situation where the result of the previous operation is needed to complete the next operation; a condition often termed data dependency conflict. Therefore pipelined processors must check for these sorts of conditions and delay a portion of the pipeline if necessary. A pipelined processor can become very nearly scalar, inhibited only by pipeline stalls (an instruction spending more than one clock cycle in a stage). + +Improvements in instruction pipelining led to further decreases in the idle time of CPU components. Designs that are said to be superscalar include a long instruction pipeline and multiple identical execution units, such as load–store units, arithmetic–logic units, floating-point units and address generation units. In a superscalar pipeline, instructions are read and passed to a dispatcher, which decides whether or not the instructions can be executed in parallel (simultaneously). If so, they are dispatched to execution units, resulting in their simultaneous execution. In general, the number of instructions that a superscalar CPU will complete in a cycle is dependent on the number of instructions it is able to dispatch simultaneously to execution units. + +Most of the difficulty in the design of a superscalar CPU architecture lies in creating an effective dispatcher. The dispatcher needs to be able to quickly determine whether instructions can be executed in parallel, as well as dispatch them in such a way as to keep as many execution units busy as possible. This requires that the instruction pipeline is filled as often as possible and requires significant amounts of CPU cache. It also makes hazard-avoiding techniques like branch prediction, speculative execution, register renaming, out-of-order execution and transactional memory crucial to maintaining high levels of performance. By attempting to predict which branch (or path) a conditional instruction will take, the CPU can minimize the number of times that the entire pipeline must wait until a conditional instruction is completed. Speculative execution often provides modest performance increases by executing portions of code that may not be needed after a conditional operation completes. Out-of-order execution somewhat rearranges the order in which instructions are executed to reduce delays due to data dependencies. Also in case of single instruction stream, multiple data stream, a case when a lot of data from the same type has to be processed, modern processors can disable parts of the pipeline so that when a single instruction is executed many times, the CPU skips the fetch and decode phases and thus greatly increases performance on certain occasions, especially in highly monotonous program engines such as video creation software and photo processing. + +When a fraction of the CPU is superscalar, the part that is not suffers a performance penalty due to scheduling stalls. The Intel P5 Pentium had two superscalar ALUs which could accept one instruction per clock cycle each, but its FPU could not. Thus the P5 was integer superscalar but not floating point superscalar. Intel's successor to the P5 architecture, P6, added superscalar abilities to its floating-point features. + +Simple pipelining and superscalar design increase a CPU's ILP by allowing it to execute instructions at rates surpassing one instruction per clock cycle. Most modern CPU designs are at least somewhat superscalar, and nearly all general purpose CPUs designed in the last decade are superscalar. In later years some of the emphasis in designing high-ILP computers has been moved out of the CPU's hardware and into its software interface, or instruction set architecture (ISA). The strategy of the very long instruction word (VLIW) causes some ILP to become implied directly by the software, reducing the CPU’s work in boosting ILP and thereby reducing design complexity. + +Task-level parallelism + +Another strategy of achieving performance is to execute multiple threads or processes in parallel. This area of research is known as parallel computing. In Flynn's taxonomy, this strategy is known as multiple instruction stream, multiple data stream (MIMD). + +One technology used for this purpose is multiprocessing (MP). The initial type of this technology is known as symmetric multiprocessing (SMP), where a small number of CPUs share a coherent view of their memory system. In this scheme, each CPU has additional hardware to maintain a constantly up-to-date view of memory. By avoiding stale views of memory, the CPUs can cooperate on the same program and programs can migrate from one CPU to another. To increase the number of cooperating CPUs beyond a handful, schemes such as non-uniform memory access (NUMA) and directory-based coherence protocols were introduced in the 1990s. SMP systems are limited to a small number of CPUs while NUMA systems have been built with thousands of processors. Initially, multiprocessing was built using multiple discrete CPUs and boards to implement the interconnect between the processors. When the processors and their interconnect are all implemented on a single chip, the technology is known as chip-level multiprocessing (CMP) and the single chip as a multi-core processor. + +It was later recognized that finer-grain parallelism existed with a single program. A single program might have several threads (or functions) that could be executed separately or in parallel. Some of the earliest examples of this technology implemented input/output processing such as direct memory access as a separate thread from the computation thread. A more general approach to this technology was introduced in the 1970s when systems were designed to run multiple computation threads in parallel. This technology is known as multi-threading (MT). The approach is considered more cost-effective than multiprocessing, as only a small number of components within a CPU are replicated to support MT as opposed to the entire CPU in the case of MP. In MT, the execution units and the memory system including the caches are shared among multiple threads. The downside of MT is that the hardware support for multithreading is more visible to software than that of MP and thus supervisor software like operating systems have to undergo larger changes to support MT. One type of MT that was implemented is known as temporal multithreading, where one thread is executed until it is stalled waiting for data to return from external memory. In this scheme, the CPU would then quickly context switch to another thread which is ready to run, the switch often done in one CPU clock cycle, such as the UltraSPARC T1. Another type of MT is simultaneous multithreading, where instructions from multiple threads are executed in parallel within one CPU clock cycle. + +For several decades from the 1970s to early 2000s, the focus in designing high performance general purpose CPUs was largely on achieving high ILP through technologies such as pipelining, caches, superscalar execution, out-of-order execution, etc. This trend culminated in large, power-hungry CPUs such as the Intel Pentium 4. By the early 2000s, CPU designers were thwarted from achieving higher performance from ILP techniques due to the growing disparity between CPU operating frequencies and main memory operating frequencies as well as escalating CPU power dissipation owing to more esoteric ILP techniques. + +CPU designers then borrowed ideas from commercial computing markets such as transaction processing, where the aggregate performance of multiple programs, also known as throughput computing, was more important than the performance of a single thread or process. + +This reversal of emphasis is evidenced by the proliferation of dual and more core processor designs and notably, Intel's newer designs resembling its less superscalar P6 architecture. Late designs in several processor families exhibit CMP, including the x86-64 Opteron and Athlon 64 X2, the SPARC UltraSPARC T1, IBM POWER4 and POWER5, as well as several video game console CPUs like the Xbox 360's triple-core PowerPC design, and the PlayStation 3's 7-core Cell microprocessor. + +Data parallelism + +A less common but increasingly important paradigm of processors (and indeed, computing in general) deals with data parallelism. The processors discussed earlier are all referred to as some type of scalar device. As the name implies, vector processors deal with multiple pieces of data in the context of one instruction. This contrasts with scalar processors, which deal with one piece of data for every instruction. Using Flynn's taxonomy, these two schemes of dealing with data are generally referred to as single instruction stream, multiple data stream (SIMD) and single instruction stream, single data stream (SISD), respectively. The great utility in creating processors that deal with vectors of data lies in optimizing tasks that tend to require the same operation (for example, a sum or a dot product) to be performed on a large set of data. Some classic examples of these types of tasks include multimedia applications (images, video and sound), as well as many types of scientific and engineering tasks. Whereas a scalar processor must complete the entire process of fetching, decoding and executing each instruction and value in a set of data, a vector processor can perform a single operation on a comparatively large set of data with one instruction. This is only possible when the application tends to require many steps which apply one operation to a large set of data. + +Most early vector processors, such as the Cray-1, were associated almost exclusively with scientific research and cryptography applications. However, as multimedia has largely shifted to digital media, the need for some form of SIMD in general-purpose processors has become significant. Shortly after inclusion of floating-point units started to become commonplace in general-purpose processors, specifications for and implementations of SIMD execution units also began to appear for general-purpose processors. Some of these early SIMD specifications – like HP's Multimedia Acceleration eXtensions (MAX) and Intel's MMX – were integer-only. This proved to be a significant impediment for some software developers, since many of the applications that benefit from SIMD primarily deal with floating-point numbers. Progressively, developers refined and remade these early designs into some of the common modern SIMD specifications, which are usually associated with one instruction set architecture (ISA). Some notable modern examples include Intel's Streaming SIMD Extensions (SSE) and the PowerPC-related AltiVec (also known as VMX). + +Hardware performance counter + +Many modern architectures (including embedded ones) often include hardware performance counters (HPC), which enables low-level (instruction-level) collection, benchmarking, debugging or analysis of running software metrics. HPC may also be used to discover and analyze unusual or suspicious activity of the software, such as return-oriented programming (ROP) or sigreturn-oriented programming (SROP) exploits etc. This is usually done by software-security teams to assess and find malicious binary programs. + +Many major vendors (such as IBM, Intel, AMD, and Arm etc.) provide software interfaces (usually written in C/C++) that can be used to collected data from CPUs registers in order to get metrics. Operating system vendors also provide software like perf (Linux) to record, benchmark, or trace CPU events running kernels and applications. + +Virtual CPUs + +Cloud computing can involve subdividing CPU operation into virtual central processing units (vCPUs). + +A host is the virtual equivalent of a physical machine, on which a virtual system is operating. When there are several physical machines operating in tandem and managed as a whole, the grouped computing and memory resources form a cluster. In some systems, it is possible to dynamically add and remove from a cluster. Resources available at a host and cluster level can be partitioned into resources pools with fine granularity. + +Performance + +The performance or speed of a processor depends on, among many other factors, the clock rate (generally given in multiples of hertz) and the instructions per clock (IPC), which together are the factors for the instructions per second (IPS) that the CPU can perform. +Many reported IPS values have represented "peak" execution rates on artificial instruction sequences with few branches, whereas realistic workloads consist of a mix of instructions and applications, some of which take longer to execute than others. The performance of the memory hierarchy also greatly affects processor performance, an issue barely considered in IPS calculations. Because of these problems, various standardized tests, often called "benchmarks" for this purpose such as SPECinthave been developed to attempt to measure the real effective performance in commonly used applications. + +Processing performance of computers is increased by using multi-core processors, which essentially is plugging two or more individual processors (called cores in this sense) into one integrated circuit. Ideally, a dual core processor would be nearly twice as powerful as a single core processor. In practice, the performance gain is far smaller, only about 50%, due to imperfect software algorithms and implementation. Increasing the number of cores in a processor (i.e. dual-core, quad-core, etc.) increases the workload that can be handled. This means that the processor can now handle numerous asynchronous events, interrupts, etc. which can take a toll on the CPU when overwhelmed. These cores can be thought of as different floors in a processing plant, with each floor handling a different task. Sometimes, these cores will handle the same tasks as cores adjacent to them if a single core is not enough to handle the information. + +Due to specific capabilities of modern CPUs, such as simultaneous multithreading and uncore, which involve sharing of actual CPU resources while aiming at increased utilization, monitoring performance levels and hardware use gradually became a more complex task. As a response, some CPUs implement additional hardware logic that monitors actual use of various parts of a CPU and provides various counters accessible to software; an example is Intel's Performance Counter Monitor technology. + +See also + + Addressing mode + AMD Accelerated Processing Unit + Complex instruction set computer + Computer bus + Computer engineering + CPU core voltage + CPU socket + Data processing unit + Digital signal processor + Graphics processing unit + Comparison of instruction set architectures + Protection ring + Reduced instruction set computer + Stream processing + True Performance Index + Tensor Processing Unit + Wait state + +Notes + +References + +External links + + . + 25 Microchips that shook the world – an article by the Institute of Electrical and Electronics Engineers. + + +Digital electronics +Electronic design +Electronic design automation +Carnivora is an order of placental mammals that have specialized in primarily eating flesh, whose members are formally referred to as carnivorans. The order Carnivora is the fifth largest order of mammals, comprising at least 279 species. + +Carnivorans live on every major landmass and in a variety of habitats, ranging from the cold polar regions to the hyper-arid region of the Sahara Desert to the open seas. They come in a very large array of different body plans with a wide diversity of shapes and sizes. + +Carnivora can be divided into two suborders: the Feliformia, containing the true felines and several feline-like forms, and the Caniformia, containing the true canids (such as wolves and dingos) and many somewhat "dog-like" forms such as sea lions and bears. The feliforms include families such as the cats, the hyenas, the mongooses and the civets. The majority of feliform species are found in the Old World, though the cats and one extinct genus of hyena have successfully diversified into the Americas. + +The caniforms include the dogs, bears, raccoons, weasels, and seals. Members of this group are found worldwide and with immense diversity in their diet, behavior, and morphology. + +Etymology +The word carnivore is derived from Latin carō (stem carn-) 'flesh' and vorāre 'to devour', and refers to any meat-eating organism. + +Phylogeny +The oldest known carnivoran line mammals (Carnivoramorpha) appeared in North America 6 million years after the Cretaceous–Paleogene extinction event. These early ancestors of carnivorans would have resembled small weasel or genet-like mammals, occupying a nocturnal shift on the forest floor or in the trees, as other groups of mammals like the mesonychians and later the creodonts were occupying the megafaunal faunivorous niche. However, following the extinction of mesonychians and the oxyaenid creodonts at the end of the Eocene, carnivorans quickly moved into this niche, with forms like the nimravids being the dominant large-bodied ambush predators during the Oligocene alongside the hyaenodont creodonts (which similarly produced larger, more open-country forms at the start of the Oligocene). By the time Miocene epoch appeared, most if not all of the major lineages and families of carnivorans had diversified and become the most dominant group of large terrestrial predators in Eurasia and North America, with various lineages being successful in megafaunal faunivorous niches at different intervals during the Miocene and later epochs. + +Systematics + +Evolution + +The order Carnivora belongs to a group of mammals known as Laurasiatheria, which also includes other groups such as bats and ungulates. Within this group the carnivorans are placed in the clade Ferae. Ferae includes the closest extant relative of carnivorans, the pangolins, as well as several extinct groups of mostly Paleogene carnivorous placentals such as the creodonts, the arctocyonians, and mesonychians. The creodonts were originally thought of as the sister taxon to the carnivorans, perhaps even ancestral to, based on the presence of the carnassial teeth, but the nature of the carnassial teeth is different between the two groups. In carnivorans the carnassials are positioned near the front of the molar row, while in the creodonts they are positioned near the back of the molar row, and this suggests a separate evolutionary history and an order-level distinction. In addition recent phylogenetic analysis suggests that creodonts are more closely related to pangolins while mesonychians might be the sister group to carnivorans and their stem-relatives. + +The closest stem-carnivorans are the miacoids. The miacoids include the families Viverravidae and Miacidae, and together the Carnivora and Miacoidea form the stem-clade Carnivoramorpha. The miacoids were small, genet-like carnivoramorphs that occupy a variety of niches such as terrestrial and arboreal habitats. Recent studies have shown a supporting amount of evidence that Miacoidea is an evolutionary grade of carnivoramorphs that, while viverravids are monophyletic basal group, the miacids are paraphyletic in respect to Carnivora (as shown in the phylogeny below). + +Carnivoramorpha as a whole first appeared in the Paleocene of North America about 60 million years ago. Crown carnivorans first appeared around 42 million years ago in the Middle Eocene. Their molecular phylogeny shows the extant Carnivora are a monophyletic group, the crown group of the Carnivoramorpha. From there carnivorans have split into two clades based on the composition of the bony structures that surround the middle ear of the skull, the cat-like feliforms and the dog-like caniforms. In feliforms, the auditory bullae are double-chambered, composed of two bones joined by a septum. Caniforms have single-chambered or partially divided auditory bullae, composed of a single bone. Initially the early representatives of carnivorans were small as the creodonts (specifically, the oxyaenids) and mesonychians dominated the apex predator niches during the Eocene, but in the Oligocene carnivorans became a dominant group of apex predators with the nimravids, and by the Miocene most of the extant carnivoran families have diversified and become the primary terrestrial predators in the Northern Hemisphere. + +The phylogenetic relationships of the carnivorans are shown in the following cladogram: + +Classification of the extant carnivorans + +In 1758 the Swedish botanist Carl Linnaeus placed all carnivorans known at the time into the group Ferae (not to be confused with the modern concept of Ferae which also includes pangolins) in the tenth edition of his book Systema Naturae. He recognized six genera: Canis (canids and hyaenids), Phoca (pinnipeds), Felis (felids), Viverra (viverrids, herpestids, and mephitids), Mustela (non-badger mustelids), Ursus (ursids, large species of mustelids, and procyonids). It wasn't until 1821 that the English writer and traveler Thomas Edward Bowdich gave the group its modern and accepted name. + +Initially the modern concept of Carnivora was divided into two suborders: the terrestrial Fissipedia and the marine Pinnipedia. Below is the classification of how the extant families were related to each other after American paleontologist George Gaylord Simpson in 1945: + Order Carnivora Bowdich, 1821 + Suborder Fissipedia Blumenbach, 1791 + Superfamily Canoidea G. Fischer de Waldheim, 1817 + Family Canidae G. Fischer de Waldheim, 1817 – dogs + Family Ursidae G. Fischer de Waldheim, 1817 – bears + Family Procyonidae Bonaparte, 1850 – raccoons and pandas + Family Mustelidae G. Fischer de Waldheim, 1817 – skunks, badgers, otters and weasels + Superfamily Feloidea G. Fischer de Waldheim, 1817 + Family Viverridae J. E. Gray, 1821 – civets and mongooses + Family Hyaenidae J. E. Gray, 1821 – hyenas + Family Felidae G. Fischer de Waldheim, 1817 – cats + Suborder Pinnipedia Iliger, 1811 + Family Otariidae J. E. Gray, 1825 – eared seals + Family Odobenidae J. A. Allen, 1880 – walrus + Family Phocidae J. E. Gray, 1821 – earless seals + +Since then, however, the methods in which mammalogists use to assess the phylogenetic relationships among the carnivoran families has been improved with using more complicated and intensive incorporation of genetics, morphology and the fossil record. Research into Carnivora phylogeny since 1945 has found Fisspedia to be paraphyletic in respect to Pinnipedia, with pinnipeds being either more closely related to bears or to weasels. The small carnivoran families Viverridae, Procyonidae, and Mustelidae have been found to be polyphyletic: + Mongooses and a handful of Malagasy endemic species are found to be in a clade with hyenas, with the Malagasy species being in their own family Eupleridae. + The African palm civet is a basal cat-like carnivoran. + The linsang is more closely related to cats. + Pandas are not procyonids nor are they a natural grouping. The giant panda is a true bear while the red panda is a distinct family. + Skunks and stink badgers are placed in their own family, and are the sister group to a clade containing Ailuridae, Procyonidae and Mustelidae sensu stricto. + +Below is a table chart of the extant carnivoran families and number of extant species recognized by various authors of the first and fourth volumes of Handbook of the Mammals of the World published in 2009 and 2014 respectively: + +Anatomy + +Skull + +The canine teeth are usually large, conical, thick and stress resistant. All of the terrestrial species of carnivorans have three incisors on each side of each jaw (the exception is the sea otter (Enhydra lutris) which only has two lower incisor teeth). The third molar has been lost. The carnassial pair is made up of the fourth upper premolar and the first lower molar teeth. Like most mammals, the dentition is heterodont, though in some species, such as the aardwolf (Proteles cristata), the teeth have been greatly reduced and the cheek teeth are specialised for eating insects. In pinnipeds, the teeth are homodont as they have evolved to grasp or catch fish, and the cheek teeth are often lost. In bears and raccoons the carnassial pair is secondarily reduced. The skulls are heavily built with a strong zygomatic arch. Often a sagittal crest is present, sometimes more evident in sexually dimorphic species such as sea lions and fur seals, though it has also been greatly reduced in some small carnivorans. The braincase is enlarged with the frontoparietal bone at the front. In most species, the eyes are at the front of the face. In caniforms, the rostrum is usually long with many teeth, while in feliforms it is shorter with fewer teeth. The carnassial teeth of feliforms are generally more sectional than those of caniforms. The turbinates are large and complex in comparison to other mammals, providing a large surface area for olfactory receptors. + +Postcranial region + +Aside from an accumulation of characteristics in the dental and cranial features, not much of their overall anatomy unites carnivorans as a group. All species of carnivorans are quadrupedal and most have five digits on the front feet and four digits on the back feet. In terrestrial carnivorans, the feet have soft pads. The feet can either be digitigrade as seen in cats, hyenas and dogs or plantigrade as seen in bears, skunks, raccoons, weasels, civets and mongooses. In pinnipeds, the limbs have been modified into flippers. + +Unlike cetaceans and sirenians, which have fully functional tails to help them swim, pinnipeds use their limbs underwater to swim. Earless seals use their back flippers; sea lions and fur seals use their front flippers, and the walrus use all of their limbs. As a result, pinnipeds have significantly shorter tails than other carnivorans. + +Aside from the pinnipeds, dogs, bears, hyenas, and cats all have distinct and recognizable appearances. Dogs are usually cursorial mammals and are gracile in appearance, often relying on their teeth to hold prey; bears are much larger and rely on their physical strength to forage for food. Compared to dogs and bears, cats have longer and stronger forelimbs armed with retractable claws to hold on to prey. Hyenas are dog-like feliforms that have sloping backs due to their front legs being longer than their hind legs. The raccoon family and red panda are small, bear-like carnivorans with long tails. The other small carnivoran families Nandiniidae, Prionodontidae, Viverridae, Herpestidae, Eupleridae, Mephitidae and Mustelidae have through convergent evolution maintained the small, ancestral appearance of the miacoids, though there is some variation seen such as the robust and stout physicality of badgers and the wolverine (Gulo gulo). Male carnivorans usually have bacula, though they are absent in hyenas and binturongs. + +The length and density of the fur vary depending on the environment that the species inhabits. In warm climate species, the fur is often short in length and lighter. In cold climate species, the fur is either dense or long, often with an oily substance that helps to retain heat. The pelage coloration differs between species, often including black, white, orange, yellow, red, and many shades of grey and brown. Some are striped, spotted, blotched, banded, or otherwise boldly patterned. There seems to be a correlation between habitat and color pattern; for example spotted or banded species tend to be found in heavily forested environments. Some species like the grey wolf are polymorphic with different individual having different coat colors. The arctic fox (Vulpes lagopus) and the stoat (Mustela erminea) have fur that changes from white and dense in the winter to brown and sparse in the summer. In pinnipeds and polar bears a thick insulating layer of blubber helps maintain their body temperature. + +Relationship with humans +Carnivorans are arguably the group of mammals of most interest to humans. The dog is noteworthy for not only being the first species of carnivoran to be domesticated, but also the first species of any taxon. In the last 10,000 to 12,000 years humans have selectively bred dogs for a variety of different tasks and today there are well over 400 breeds. The cat is another domesticated carnivoran and it is today considered one of the most successful species on the planet, due to their close proximity to humans and the popularity of cats as pets. Many other species are popular, and they are often charismatic megafauna. Many civilizations have incorporated a species of carnivoran into their culture: a prominent example is the lion, viewed as a symbol of power and royalty in many societies. Yet many species such as wolves and the big cats have been broadly hunted, resulting in extirpation in some areas. Habitat loss and human encroachment as well as climate change have been the primary cause of many species going into decline. Four species of carnivorans have gone extinct since the 1600s: Falkland Island wolf (Dusicyon australis) in 1876; the sea mink (Neogale macrodon) in 1894; the Japanese sea lion (Zalophus japonicus) in 1951 and the Caribbean monk seal (Neomonachus tropicalis) in 1952. Some species such as the red fox (Vulpes vulpes) and stoat (Mustela erminea) have been introduced to Australasia and have caused many native species to become endangered or even extinct. + +See also + Mammal classification + Carnivoraformes + List of carnivorans + List of carnivorans by population + +References + +External links + + High-Resolution Images of Carnivore Brains + + +Mammal orders +Extant Lutetian first appearances +Taxa named by Thomas Edward Bowdich +Colombia (, ; ), officially the Republic of Colombia, is a country mostly in South America with insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuela to the east and northeast, Brazil to the southeast, Ecuador and Peru to the south and southwest, the Pacific Ocean to the west, and Panama to the northwest. Colombia is divided into 32 departments. The Capital District of Bogotá is also the country's largest city hosting the main financial and cultural hub. Other major urbes include Medellín, Cali, Barranquilla, Cartagena, Santa Marta, Cúcuta, Ibagué, Villavicencio and Bucaramanga. It covers an area of 1,141,748 square kilometers (440,831 sq mi), and has a population of around 52 million. Its rich cultural heritage—including language, religion, cuisine, and art—reflects its history as a colony, fusing cultural elements brought by mass immigration from Europe and the Middle East, with those brought by the African diaspora, as well as with those of the various Indigenous civilizations that predate colonization. Spanish is the official language, although English and 64 other languages are recognized regionally. + +Colombia has been home to many indigenous peoples and cultures since at least 12,000 BCE. The Spanish first landed in La Guajira in 1499, and by the mid-16th century they had colonized much of present-day Colombia, and established the New Kingdom of Granada, with Santa Fé de Bogotá as its capital. Independence from the Spanish Empire was achieved in 1819, with what is now Colombia emerging as the United Provinces of New Granada. The new polity experimented with federalism as the Granadine Confederation (1858) and then the United States of Colombia (1863), before becoming a republic—the current Republic of Colombia—in 1886. With the backing of the United States and France, Panama seceded from Colombia in 1903, resulting in Colombia's present borders. Beginning in the 1960s, the country has suffered from an asymmetric low-intensity armed conflict and political violence, both of which escalated in the 1990s. Since 2005, there has been significant improvement in security, stability and rule of law, as well as unprecedented economic growth and development. Colombia is recognized for its healthcare system, being the best healthcare in Latin America according to the World Health Organization and 22nd in the world. + +Colombia is one of the world's seventeen megadiverse countries; it has the highest level of biodiversity per square mile in the world and the second-highest level overall. Its territory encompasses Amazon rainforest, highlands, grasslands and deserts. It is the only country in South America with coastlines (and islands) along both the Atlantic and Pacific oceans. Colombia is a key member of major global and regional organizations including the UN, the WTO, the OECD, the OAS, the Pacific Alliance and the Andean Community; it is also a NATO Global Partner. Its diversified economy is the third-largest in South America, with macroeconomic stability and favorable long-term growth prospects. + +Etymology + +The name "Colombia" is derived from the last name of the Italian navigator Christopher Columbus (, , ). It was conceived as a reference to all of the New World. The name was later adopted by the Republic of Colombia of 1819, formed from the territories of the old Viceroyalty of New Granada (modern-day Colombia, Panama, Venezuela, Ecuador, and northwest Brazil). + +When Venezuela, Ecuador, and Cundinamarca came to exist as independent states, the former Department of Cundinamarca adopted the name "Republic of New Granada". New Granada officially changed its name in 1858 to the Granadine Confederation. In 1863 the name was again changed, this time to United States of Colombia, before finally adopting its present name – the Republic of Colombia – in 1886. + +To refer to this country, the Colombian government uses the terms and . + +History + +Pre-Columbian era + +Owing to its location, the present territory of Colombia was a corridor of early human civilization from Mesoamerica and the Caribbean to the Andes and Amazon basin. The oldest archaeological finds are from the Pubenza and El Totumo sites in the Magdalena Valley southwest of Bogotá. These sites date from the Paleoindian period (18,000–8000 BCE). At Puerto Hormiga and other sites, traces from the Archaic Period (~8000–2000 BCE) have been found. Vestiges indicate that there was also early occupation in the regions of El Abra and Tequendama in Cundinamarca. The oldest pottery discovered in the Americas, found at San Jacinto, dates to 5000–4000 BCE. + +Indigenous people inhabited the territory that is now Colombia by 12,500 BCE. Nomadic hunter-gatherer tribes at the El Abra, Tibitó and Tequendama sites near present-day Bogotá traded with one another and with other cultures from the Magdalena River Valley. A site including of pictographs that is under study at Serranía de la Lindosa was revealed in November 2020. Their age is suggested as being 12,500 years old (c. 10,480 B.C.) by the anthropologists working on the site because of extinct fauna depicted. That would have been during the earliest known human occupation of the area now known as Colombia. + +Between 5000 and 1000 BCE, hunter-gatherer tribes transitioned to agrarian societies; fixed settlements were established, and pottery appeared. Beginning in the 1st millennium BCE, groups of Amerindians including the Muisca, Zenú, Quimbaya, and Tairona developed the political system of cacicazgos with a pyramidal structure of power headed by caciques. The Muisca inhabited mainly the area of what is now the Departments of Boyacá and Cundinamarca high plateau (Altiplano Cundiboyacense) where they formed the Muisca Confederation. They farmed maize, potato, quinoa, and cotton, and traded gold, emeralds, blankets, ceramic handicrafts, coca and especially rock salt with neighboring nations. The Tairona inhabited northern Colombia in the isolated mountain range of Sierra Nevada de Santa Marta. The Quimbaya inhabited regions of the Cauca River Valley between the Western and Central Ranges of the Colombian Andes. Most of the Amerindians practiced agriculture and the social structure of each indigenous community was different. Some groups of indigenous people such as the Caribs lived in a state of permanent war, but others had less bellicose attitudes. + +Colonial period + +Alonso de Ojeda (who had sailed with Columbus) reached the Guajira Peninsula in 1499. Spanish explorers, led by Rodrigo de Bastidas, made the first exploration of the Caribbean coast in 1500. Christopher Columbus navigated near the Caribbean in 1502. In 1508, Vasco Núñez de Balboa accompanied an expedition to the territory through the region of Gulf of Urabá and they founded the town of Santa María la Antigua del Darién in 1510, the first stable settlement on the continent. Santa Marta was founded in 1525, and Cartagena in 1533. Spanish conquistador Gonzalo Jiménez de Quesada led an expedition to the interior in April 1536, and christened the districts through which he passed "New Kingdom of Granada". In August 1538, he provisionally founded its capital near the Muisca cacicazgo of Muyquytá, and named it "Santa Fe". The name soon acquired a suffix and was called Santa Fe de Bogotá. Two other notable journeys by early conquistadors to the interior took place in the same period. Sebastián de Belalcázar, conqueror of Quito, traveled north and founded Cali, in 1536, and Popayán, in 1537; from 1536 to 1539, German conquistador Nikolaus Federmann crossed the Llanos Orientales and went over the Cordillera Oriental in a search for El Dorado, the "city of gold". The legend and the gold would play a pivotal role in luring the Spanish and other Europeans to New Granada during the 16th and 17th centuries. + +The conquistadors made frequent alliances with the enemies of different indigenous communities. Indigenous allies were crucial to conquest, as well as to creating and maintaining empire. Indigenous peoples in New Granada experienced a decline in population due to conquest as well as Eurasian diseases, such as smallpox, to which they had no immunity. Regarding the land as deserted, the Spanish Crown sold properties to all persons interested in colonized territories, creating large farms and possession of mines. In the 16th century, the nautical science in Spain reached a great development thanks to numerous scientific figures of the Casa de Contratación and nautical science was an essential pillar of the Iberian expansion. In 1542, the region of New Granada, along with all other Spanish possessions in South America, became part of the Viceroyalty of Peru, with its capital in Lima. In 1547, New Granada became a separate captaincy-general within the viceroyalty, with its capital at Santa Fe de Bogota. In 1549, the Royal Audiencia was created by a royal decree, and New Granada was ruled by the Royal Audience of Santa Fe de Bogotá, which at that time comprised the provinces of Santa Marta, Rio de San Juan, Popayán, Guayana and Cartagena. But important decisions were taken from the colony to Spain by the Council of the Indies. + +In the 16th century, European slave traders had begun to bring enslaved Africans to the Americas. Spain was the only European power that did not establish factories in Africa to purchase slaves; the Spanish Empire instead relied on the asiento system, awarding merchants from other European nations the license to trade enslaved peoples to their overseas territories. This system brought Africans to Colombia, although many spoke out against the institution. The indigenous peoples could not be enslaved because they were legally subjects of the Spanish Crown. To protect the indigenous peoples, several forms of land ownership and regulation were established by the Spanish colonial authorities: resguardos, encomiendas and haciendas. + +However, secret anti-Spanish discontentment was already brewing for Colombians since Spain prohibited direct trade between the Viceroyalty of Peru, which included Colombia, and the Viceroyalty of New Spain, which included the Philippines, the source of Asian products like silk and porcelain which was in demand in the Americas. Illegal trade between Peruvians, Filipinos, and Mexicans continued in secret, as smuggled Asian goods ended up in Córdoba, Colombia, the distribution center for illegal Asian imports, due to the collusion between these peoples against the authorities in Spain. They settled and traded with each other while disobeying the forced Spanish monopoly. + +The Viceroyalty of New Granada was established in 1717, then temporarily removed, and then re-established in 1739. Its capital was Santa Fé de Bogotá. This Viceroyalty included some other provinces of northwestern South America that had previously been under the jurisdiction of the Viceroyalties of New Spain or Peru and correspond mainly to today's Venezuela, Ecuador, and Panama. So, Bogotá became one of the principal administrative centers of the Spanish possessions in the New World, along with Lima and Mexico City, though it remained somewhat backward compared to those two cities in several economic and logistical ways. + +Great Britain declared war on Spain in 1739, and the city of Cartagena quickly became a top target for the British. A massive British expeditionary force was dispatched to capture the city, but, after achieving initial inroads, devastating outbreaks of disease crippled their numbers and the British were forced to withdraw. The battle became one of Spain's most decisive victories in the conflict, and secured Spanish dominance in the Caribbean until the Seven Years' War. The 18th-century priest, botanist and mathematician José Celestino Mutis was delegated by Viceroy Antonio Caballero y Góngora to conduct an inventory of the nature of New Granada. Started in 1783, this became known as the Royal Botanical Expedition to New Granada. It classified plants and wildlife, and founded the first astronomical observatory in the city of Santa Fe de Bogotá. In July 1801 the Prussian scientist Alexander von Humboldt reached Santa Fe de Bogotá where he met with Mutis. In addition, historical figures in the process of independence in New Granada emerged from the expedition as the astronomer Francisco José de Caldas, the scientist Francisco Antonio Zea, the zoologist Jorge Tadeo Lozano and the painter Salvador Rizo. + +Independence + +Since the beginning of the periods of conquest and colonization, there were several rebel movements against Spanish rule, but most were either crushed or remained too weak to change the overall situation. The last one that sought outright independence from Spain sprang up around 1810 and culminated in the Colombian Declaration of Independence, issued on 20 July 1810, the day that is now celebrated as the nation's Independence Day. This movement followed the independence of St. Domingue (present-day Haiti) in 1804, which provided some support to an eventual leader of this rebellion: Simón Bolívar. Francisco de Paula Santander also would play a decisive role. + +A movement was initiated by Antonio Nariño, who opposed Spanish centralism and led the opposition against the Viceroyalty. Cartagena became independent in November 1811. In 1811, the United Provinces of New Granada were proclaimed, headed by Camilo Torres Tenorio. The emergence of two distinct ideological currents among the patriots (federalism and centralism) gave rise to a period of instability. Shortly after the Napoleonic Wars ended, Ferdinand VII, recently restored to the throne in Spain, unexpectedly decided to send military forces to retake most of northern South America. The viceroyalty was restored under the command of Juan Sámano, whose regime punished those who participated in the patriotic movements, ignoring the political nuances of the juntas. The retribution stoked renewed rebellion, which, combined with a weakened Spain, made possible a successful rebellion led by the Venezuelan-born Simón Bolívar, who finally proclaimed independence in 1819. The pro-Spanish resistance was defeated in 1822 in the present territory of Colombia and in 1823 in Venezuela. + +The territory of the Viceroyalty of New Granada became the Republic of Colombia, organized as a union of the current territories of Colombia, Panama, Ecuador, Venezuela, parts of Guyana and Brazil and north of Marañón River. The Congress of Cúcuta in 1821 adopted a constitution for the new Republic. Simón Bolívar became the first President of Colombia, and Francisco de Paula Santander was made Vice President. However, the new republic was unstable and the Gran Colombia ultimately collapsed. + +Modern Colombia comes from one of the countries that emerged after the dissolution of Gran Colombia, the other two being Ecuador and Venezuela. Colombia was the first constitutional government in South America, and the Liberal and Conservative parties, founded in 1848 and 1849, respectively, are two of the oldest surviving political parties in the Americas. Slavery was abolished in the country in 1851. + +Internal political and territorial divisions led to the dissolution of Gran Colombia in 1830. The so-called "Department of Cundinamarca" adopted the name "New Granada", which it kept until 1858 when it became the "Confederación Granadina" (Granadine Confederation). After a two-year civil war in 1863, the "United States of Colombia" was created, lasting until 1886, when the country finally became known as the Republic of Colombia. Internal divisions remained between the bipartisan political forces, occasionally igniting very bloody civil wars, the most significant being the Thousand Days' War (1899–1902). + +20th century + +The United States of America's intentions to influence the area (especially the Panama Canal construction and control) led to the separation of the Department of Panama in 1903 and the establishment of it as a nation. The United States paid Colombia $25,000,000 in 1921, seven years after completion of the canal, for redress of President Roosevelt's role in the creation of Panama, and Colombia recognized Panama under the terms of the Thomson–Urrutia Treaty. Colombia and Peru went to war because of territory disputes far in the Amazon basin. The war ended with a peace deal brokered by the League of Nations. The League finally awarded the disputed area to Colombia in June 1934. + +Soon after, Colombia achieved some degree of political stability, which was interrupted by a bloody conflict that took place between the late 1940s and the early 1950s, a period known as La Violencia ("The Violence"). Its cause was mainly mounting tensions between the two leading political parties, which subsequently ignited after the assassination of the Liberal presidential candidate Jorge Eliécer Gaitán on 9 April 1948. The ensuing riots in Bogotá, known as El Bogotazo, spread throughout the country and claimed the lives of at least 180,000 Colombians. + +Colombia entered the Korean War when Laureano Gómez was elected president. It was the only Latin American country to join the war in a direct military role as an ally of the United States. Particularly important was the resistance of the Colombian troops at Old Baldy. + +The violence between the two political parties decreased first when Gustavo Rojas deposed the President of Colombia in a coup d'état and negotiated with the guerrillas, and then under the military junta of General Gabriel París. + +After Rojas' deposition, the Colombian Conservative Party and Colombian Liberal Party agreed to create the National Front, a coalition that would jointly govern the country. Under the deal, the presidency would alternate between conservatives and liberals every 4 years for 16 years; the two parties would have parity in all other elective offices. The National Front ended "La Violencia", and National Front administrations attempted to institute far-reaching social and economic reforms in cooperation with the Alliance for Progress. Despite the progress in certain sectors, many social and political problems continued, and guerrilla groups were formally created such as the FARC, the ELN and the M-19 to fight the government and political apparatus. + +Since the 1960s, the country has suffered from an asymmetric low-intensity armed conflict between government forces, leftist guerrilla groups and right wing paramilitaries. The conflict escalated in the 1990s, mainly in remote rural areas. Since the beginning of the armed conflict, human rights defenders have fought for the respect for human rights, despite staggering opposition. Several guerrillas' organizations decided to demobilize after peace negotiations in 1989–1994. + +The United States has been heavily involved in the conflict since its beginnings, when in the early 1960s the U.S. government encouraged the Colombian military to attack leftist militias in rural Colombia. This was part of the U.S. fight against communism. Mercenaries and multinational corporations such as Chiquita Brands International are some of the international actors that have contributed to the violence of the conflict. + +Beginning in the mid-1970s Colombian drug cartels became major producers, processors and exporters of illegal drugs, primarily marijuana and cocaine. + +On 4 July 1991, a new Constitution was promulgated. The changes generated by the new constitution are viewed as positive by Colombian society. + +21st century + +The administration of President Álvaro Uribe (2002–2010) adopted the democratic security policy which included an integrated counter-terrorism and counter-insurgency campaign. The government economic plan also promoted confidence in investors. As part of a controversial peace process, the AUC (right-wing paramilitaries) had ceased to function formally as an organization . In February 2008, millions of Colombians demonstrated against FARC and other outlawed groups. + +After peace negotiations in Cuba, the Colombian government of President Juan Manuel Santos and the guerrillas of the FARC-EP announced a final agreement to end the conflict. However, a referendum to ratify the deal was unsuccessful. Afterward, the Colombian government and the FARC signed a revised peace deal in November 2016, which the Colombian congress approved. In 2016, President Santos was awarded the Nobel Peace Prize. The Government began a process of attention and comprehensive reparation for victims of conflict. Colombia shows modest progress in the struggle to defend human rights, as expressed by HRW. A Special Jurisdiction of Peace has been created to investigate, clarify, prosecute and punish serious human rights violations and grave breaches of international humanitarian law which occurred during the armed conflict and to satisfy victims' right to justice. During his visit to Colombia, Pope Francis paid tribute to the victims of the conflict. + +In June 2018, Ivan Duque, the candidate of the right-wing Democratic Center party, won the presidential election. On 7 August 2018, he was sworn in as the new President of Colombia to succeed Juan Manuel Santos. Colombia's relations with Venezuela have fluctuated due to ideological differences between the two governments. Colombia has offered humanitarian support with food and medicines to mitigate the shortage of supplies in Venezuela. Colombia's Foreign Ministry said that all efforts to resolve Venezuela's crisis should be peaceful. Colombia proposed the idea of the Sustainable Development Goals and a final document was adopted by the United Nations. In February 2019, Venezuelan president Nicolás Maduro cut off diplomatic relations with Colombia after Colombian President Ivan Duque had helped Venezuelan opposition politicians deliver humanitarian aid to their country. Colombia recognized Venezuelan opposition leader Juan Guaidó as the country's legitimate president. In January 2020, Colombia rejected Maduro's proposal that the two countries restore diplomatic relations. + +Protests started on 28 April 2021 when the government proposed a tax bill which would greatly expand the range of the 19 percent value-added tax. The 19 June 2022 election run-off vote ended in a win for former guerrilla, Gustavo Petro, taking 50.47% of the vote compared to 47.27% for independent candidate Rodolfo Hernández. The single-term limit for the country's presidency prevented president Iván Duque from seeking re-election. On 7 August 2022, Petro was sworn in, becoming the country's first leftist president. + +Geography + +The geography of Colombia is characterized by its six main natural regions that present their own unique characteristics, from the Andes mountain range region shared with Ecuador and Venezuela; the Pacific Coastal region shared with Panama and Ecuador; the Caribbean coastal region shared with Venezuela and Panama; the Llanos (plains) shared with Venezuela; the Amazon rainforest region shared with Venezuela, Brazil, Peru and Ecuador; to the insular area, comprising islands in both the Atlantic and Pacific oceans. It shares its maritime limits with Costa Rica, Nicaragua, Honduras, Jamaica, Haiti, and the Dominican Republic. + +Colombia is bordered to the northwest by Panama, to the east by Venezuela and Brazil, and to the south by Ecuador and Peru; it established its maritime boundaries with neighboring countries through seven agreements on the Caribbean Sea and three on the Pacific Ocean. It lies between latitudes 12°N and 4°S and between longitudes 67° and 79°W. + +East of the Andes lies the savanna of the Llanos, part of the Orinoco River basin, and in the far southeast, the jungle of the Amazon rainforest. Together these lowlands make up over half Colombia's territory, but they contain less than 6% of the population. To the north the Caribbean coast, home to 21.9% of the population and the location of the major port cities of Barranquilla and Cartagena, generally consists of low-lying plains, but it also contains the Sierra Nevada de Santa Marta mountain range, which includes the country's tallest peaks (Pico Cristóbal Colón and Pico Simón Bolívar), and the La Guajira Desert. By contrast the narrow and discontinuous Pacific coastal lowlands, backed by the Serranía de Baudó mountains, are sparsely populated and covered in dense vegetation. The principal Pacific port is Buenaventura. + +Part of the Ring of Fire, a region of the world subject to earthquakes and volcanic eruptions, in the interior of Colombia the Andes are the prevailing geographical feature. Most of Colombia's population centers are located in these interior highlands. Beyond the Colombian Massif (in the southwestern departments of Cauca and Nariño), these are divided into three branches known as cordilleras (mountain ranges): the Cordillera Occidental, running adjacent to the Pacific coast and including the city of Cali; the Cordillera Central, running between the Cauca and Magdalena River valleys (to the west and east, respectively) and including the cities of Medellín, Manizales, Pereira, and Armenia; and the Cordillera Oriental, extending northeast to the Guajira Peninsula and including Bogotá, Bucaramanga, and Cúcuta. Peaks in the Cordillera Occidental exceed , and in the Cordillera Central and Cordillera Oriental they reach . At , Bogotá is the highest city of its size in the world. + +The main rivers of Colombia are Magdalena, Cauca, Guaviare, Atrato, Meta, Putumayo and Caquetá. Colombia has four main drainage systems: the Pacific drain, the Caribbean drain, the Orinoco Basin and the Amazon Basin. The Orinoco and Amazon Rivers mark limits with Colombia to Venezuela and Peru respectively. + +Climate + +The climate of Colombia is characterized for being tropical presenting variations within six natural regions and depending on the altitude, temperature, humidity, winds and rainfall. Colombia has a diverse range of climate zones, including tropical rainforests, savannas, steppes, deserts and mountain climates. + +Mountain climate is one of the unique features of the Andes and other high altitude reliefs where climate is determined by elevation. Below in elevation is the warm altitudinal zone, where temperatures are above . About 82.5% of the country's total area lies in the warm altitudinal zone. The temperate climate altitudinal zone located between is characterized for presenting an average temperature ranging between . The cold climate is present between and the temperatures vary between . Beyond lies the alpine conditions of the forested zone and then the treeless grasslands of the páramos. Above , where temperatures are below freezing, the climate is glacial, a zone of permanent snow and ice. + +Biodiversity and conservation + +Colombia is one of the megadiverse countries in biodiversity, ranking first in bird species. Colombia is the country with the planet's highest biodiversity, having the highest rate of species by area as well as the largest number of endemisms (species that are not found naturally anywhere else) of any country. About 10% of the species of the Earth live in Colombia, including over 1,900 species of bird, more than in Europe and North America combined. Colombia has 10% of the world's mammals species, 14% of the amphibian species and 18% of the bird species of the world. + +As for plants, the country has between 40,000 and 45,000 plant species, equivalent to 10 or 20% of total global species, which is even more remarkable given that Colombia is considered a country of intermediate size. Colombia is the second most biodiverse country in the world, lagging only after Brazil which is approximately 7 times bigger. + +Colombia has about 2,000 species of marine fish and is the second most diverse country in freshwater fish. It is also the country with the most endemic species of butterflies, is first in orchid species, and has approximately 7,000 species of beetles. Colombia is second in the number of amphibian species and is the third most diverse country in reptiles and palms. There are about 1,900 species of mollusks and according to estimates there are about 300,000 species of invertebrates in the country. In Colombia there are 32 terrestrial biomes and 314 types of ecosystems. + +Protected areas and the "National Park System" cover an area of about and account for 12.77% of the Colombian territory. Compared to neighboring countries, rates of deforestation in Colombia are still relatively low. Colombia had a 2018 Forest Landscape Integrity Index mean score of 8.26/10, ranking it 25th globally out of 172 countries. Colombia is the sixth country in the world by magnitude of total renewable freshwater supply, and still has large reserves of freshwater. + +Government and politics + +The government of Colombia takes place within the framework of a presidential participatory democratic republic as established in the Constitution of 1991. In accordance with the principle of separation of powers, government is divided into three branches: the executive branch, the legislative branch and the judicial branch. + +As the head of the executive branch, the President of Colombia serves as both head of state and head of government, followed by the Vice President and the Council of Ministers. The president is elected by popular vote to serve a single four-year term (In 2015, Colombia's Congress approved the repeal of a 2004 constitutional amendment that changed the one-term limit for presidents to a two-term limit). At the provincial level executive power is vested in department governors, municipal mayors and local administrators for smaller administrative subdivisions, such as corregimientos or comunas. All regional elections are held one year and five months after the presidential election. + +The legislative branch of government is represented nationally by the Congress, a bicameral institution comprising a 166-seat Chamber of Representatives and a 102-seat Senate. The Senate is elected nationally and the Chamber of Representatives is elected in electoral districts. Members of both houses are elected to serve four-year terms two months before the president, also by popular vote. + +The judicial branch is headed by four high courts, consisting of the Supreme Court which deals with penal and civil matters, the Council of State, which has special responsibility for administrative law and also provides legal advice to the executive, the Constitutional Court, responsible for assuring the integrity of the Colombian constitution, and the Superior Council of Judicature, responsible for auditing the judicial branch. Colombia operates a system of civil law, which since 1991 has been applied through an adversarial system. + +Despite a number of controversies, the democratic security policy has ensured that former President Álvaro Uribe remained popular among Colombian people, with his approval rating peaking at 76%, according to a poll in 2009. However, having served two terms, he was constitutionally barred from seeking re-election in 2010. In the run-off elections on 20 June 2010 the former Minister of Defense Juan Manuel Santos won with 69% of the vote against the second most popular candidate, Antanas Mockus. A second round was required since no candidate received over the 50% winning threshold of votes. Santos won re-election with nearly 51% of the vote in second-round elections on 15 June 2014, beating right-wing rival Óscar Iván Zuluaga, who won 45%. In 2018, Iván Duque won in the second round of the election with 54% of the vote, against 42% for his left-wing rival, Gustavo Petro. His term as Colombia's president ran for four years, beginning on 7 August 2018. In 2022, Colombia elected Gustavo Petro, who became its first leftist leader, and Francia Marquez, who was the first black person elected as vice president. + +Foreign affairs + +The foreign affairs of Colombia are headed by the President, as head of state, and managed by the Minister of Foreign Affairs. Colombia has diplomatic missions in all continents. + +Colombia was one of the four founding members of the Pacific Alliance, which is a political, economic and co-operative integration mechanism that promotes the free circulation of goods, services, capital and persons between the members, as well as a common stock exchange and joint embassies in several countries. Colombia is also a member of the United Nations, the World Trade Organization, the Organisation for Economic Co-operation and Development, the Organization of American States, the Organization of Ibero-American States, and the Andean Community of Nations. Colombia is a global partner of NATO. + +Military + +The executive branch of government is responsible for managing the defense of Colombia, with the President commander-in-chief of the armed forces. The Ministry of Defence exercises day-to-day control of the military and the Colombian National Police. Colombia has 455,461 active military personnel. In 2016, 3.4% of the country's GDP went towards military expenditure, placing it 24th in the world. Colombia's armed forces are the largest in Latin America, and it is the second largest spender on its military after Brazil. In 2018, Colombia signed the UN treaty on the Prohibition of Nuclear Weapons. + +The Colombian military is divided into three branches: the National Army of Colombia; the Colombian Aerospace Force; and the Colombian Navy. The National Police functions as a gendarmerie, operating independently from the military as the law enforcement agency for the entire country. Each of these operates with their own intelligence apparatus separate from the National Intelligence Directorate (DNI, in Spanish). + +The National Army is formed by divisions, brigades, special brigades, and special units, the Colombian Navy by the Naval Infantry, the Naval Force of the Caribbean, the Naval Force of the Pacific, the Naval Force of the South, the Naval Force of the East, Colombia Coast Guards, Naval Aviation, and the Specific Command of San Andres y Providencia and the Aerospace Force by 15 air units. The National Police has a presence in all municipalities. + +Administrative divisions + +Colombia is divided into 32 departments and one capital district, which is treated as a department (Bogotá also serves as the capital of the department of Cundinamarca). Departments are subdivided into municipalities, each of which is assigned a municipal seat, and municipalities are in turn subdivided into corregimientos in rural areas and into comunas in urban areas. Each department has a local government with a governor and assembly directly elected to four-year terms, and each municipality is headed by a mayor and council. There is a popularly elected local administrative board in each of the corregimientos or comunas. + +In addition to the capital, four other cities have been designated districts (in effect special municipalities), on the basis of special distinguishing features. These are Barranquilla, Cartagena, Santa Marta and Buenaventura. Some departments have local administrative subdivisions, where towns have a large concentration of population and municipalities are near each other (for example, in Antioquia and Cundinamarca). Where departments have a low population (for example Amazonas, Vaupés and Vichada), special administrative divisions are employed, such as "department corregimientos", which are a hybrid of a municipality and a corregimiento. + +Click on a department on the map below to go to its article. + +Economy + +Historically an agrarian economy, Colombia urbanized rapidly in the 20th century, by the end of which just 15.8% of the workforce were employed in agriculture, generating just 6.6% of GDP; 19.6% of the workforce were employed in industry and 64.6% in services, responsible for 33.4% and 59.9% of GDP respectively. The country's economic production is dominated by its strong domestic demand. Consumption expenditure by households is the largest component of GDP. + +Colombia's market economy grew steadily in the latter part of the 20th century, with gross domestic product (GDP) increasing at an average rate of over 4% per year between 1970 and 1998. The country suffered a recession in 1999 (the first full year of negative growth since the Great Depression), and the recovery from that recession was long and painful. However, in recent years growth has been impressive, reaching 6.9% in 2007, one of the highest rates of growth in Latin America. According to International Monetary Fund estimates, in 2012, Colombia's GDP (PPP) was US$500 billion (28th in the world and third in South America). + +Total government expenditures account for 27.9 percent of the domestic economy. External debt equals 39.9 percent of gross domestic product. A strong fiscal climate was reaffirmed by a boost in bond ratings. Annual inflation closed 2017 at 4.09% YoY (vs. 5.75% YoY in 2016). The average national unemployment rate in 2017 was 9.4%, although the informality is the biggest problem facing the labour market (the income of formal workers climbed 24.8% in 5 years while labor incomes of informal workers rose only 9%). Colombia has free-trade zones (FTZ), such as Zona Franca del Pacifico, located in the Valle del Cauca, one of the most striking areas for foreign investment. + +The financial sector has grown favorably due to good liquidity in the economy, the growth of credit and the positive performance of the Colombian economy. The Colombian Stock Exchange through the Latin American Integrated Market (MILA) offers a regional market to trade equities. Colombia is now one of only three economies with a perfect score on the strength of legal rights index, according to the World Bank. + +Colombia is rich in natural resources, and it is heavily dependent on energy and mining exports. Colombia's main exports include mineral fuels, oils, distillation products, fruit and other agricultural products, sugars and sugar confectionery, food products, plastics, precious stones, metals, forest products, chemical goods, pharmaceuticals, vehicles, electronic products, electrical equipment, perfumery and cosmetics, machinery, manufactured articles, textile and fabrics, clothing and footwear, glass and glassware, furniture, prefabricated buildings, military products, home and office material, construction equipment, software, among others. Principal trading partners are the United States, China, the European Union and some Latin American countries. + +Non-traditional exports have boosted the growth of Colombian foreign sales as well as the diversification of destinations of export thanks to new free trade agreements. Recent economic growth has led to a considerable increase of new millionaires, including the new entrepreneurs, Colombians with a net worth exceeding US$1 billion. + +In 2017, however, the National Administrative Department of Statistics (DANE) reported that 26.9% of the population were living below the poverty line, of which 7.4% were in "extreme poverty". The multidimensional poverty rate stands at 17.0 percent of the population. The Government has also been developing a process of financial inclusion within the country's most vulnerable population. + +The contribution of tourism to GDP was US$5,880.3bn (2.0% of total GDP) in 2016. Tourism generated 556,135 jobs (2.5% of total employment) in 2016. Foreign tourist visits were predicted to have risen from 0.6 million in 2007 to 4 million in 2017. + +Agriculture and natural resources + +In agriculture, Colombia is one of the 5 largest producers in the world of coffee, avocado and palm oil, and one of the 10 largest producers in the world of sugarcane, banana, pineapple and cocoa. The country also has considerable production of rice, potato and cassava. Although it is not the largest coffee producer in the world (Brazil claims that title), the country has been able to carry out, for decades, a global marketing campaign to add value to the country's product. Colombian palm oil production is one of the most sustainable on the planet, compared to the largest existing producers. Colombia is also among the 20 largest producers in the world of beef and chicken meat. Colombia is also the 2nd largest flower exporter in the world, after the Netherlands. + +Colombia is an important exporter of coal and petroleum – in 2020, more than 40% of the country's exports were based on these two products. In 2018 it was the 5th largest coal exporter in the world. In 2019, Colombia was the 20th largest petroleum producer in the world, with 791 thousand barrels/day, exporting a good part of its production – the country was the 19th largest oil exporter in the world in 2020. In mining, Colombia is the world's largest producer of emerald, and in the production of gold, between 2006 and 2017, the country produced 15 tons per year until 2007, when its production increased significantly, beating the record of 66.1 tons extracted in 2012. In 2017, it extracted 52.2 tons. Currently, the country is among the 25 largest gold producers in the world. + +Energy and transportation + +The electricity production in Colombia comes mainly from Renewable energy sources. 69.93% is obtained from the hydroelectric generation. Colombia's commitment to renewable energy was recognized in the 2014 Global Green Economy Index (GGEI), ranking among the top 10 nations in the world in terms of greening efficiency sectors. + +Transportation in Colombia is regulated within the functions of the Ministry of Transport and entities such as the National Roads Institute (INVÍAS) responsible for the Highways in Colombia, the Aerocivil, responsible for civil aviation and airports, the National Infrastructure Agency, in charge of concessions through public–private partnerships, for the design, construction, maintenance, operation, and administration of the transport infrastructure, the General Maritime Directorate (Dimar) has the responsibility of coordinating maritime traffic control along with the Colombian Navy, among others and under the supervision of the Superintendency of Ports and Transport. + +In 2021, Colombia had of roads, of which were paved. At the end of 2017, the country had around of duplicated highways. Rail transportation in Colombia is dedicated almost entirely to freight shipments and the railway network has a length of 1,700 km of potentially active rails. Colombia has 3,960 kilometers of gas pipelines, 4,900 kilometers of oil pipelines, and 2,990 kilometers of refined-products pipelines. + +The target of Colombia's government is to build 7,000 km of roads for the 2016–2020 period and reduce travel times by 30 per cent and transport costs by 20 per cent. A toll road concession programme will comprise 40 projects, and is part of a larger strategic goal to invest nearly $50 bn in transport infrastructure, including: railway systems; making the Magdalena river navigable again; improving port facilities; as well as an expansion of Bogotá's airport. Colombia is a middle-income country. + +Science and technology + +Colombia has more than 3,950 research groups in science and technology. iNNpulsa, a government body that promotes entrepreneurship and innovation in the country, provides grants to startups, in addition to other services it and institutions provide. Colombia was ranked 66th in the Global Innovation Index in 2023. Co-working spaces have arisen to serve as communities for startups large and small. Organizations such as the Corporation for Biological Research (CIB) for the support of young people interested in scientific work has been successfully developed in Colombia. The International Center for Tropical Agriculture based in Colombia investigates the increasing challenge of global warming and food security. + +Important inventions related to medicine have been made in Colombia, such as the first external artificial pacemaker with internal electrodes, invented by the electrical engineer Jorge Reynolds Pombo, an invention of great importance for those who suffer from heart failure. Also invented in Colombia were the microkeratome and keratomileusis technique, which form the fundamental basis of what now is known as LASIK (one of the most important techniques for the correction of refractive errors of vision) and the Hakim valve for the treatment of hydrocephalus. Colombia has begun to innovate in military technology for its army and other armies of the world; especially in the design and creation of personal ballistic protection products, military hardware, military robots, bombs, simulators and radar. + +Some leading Colombian scientists are Joseph M. Tohme, researcher recognized for his work on the genetic diversity of food, Manuel Elkin Patarroyo who is known for his groundbreaking work on synthetic vaccines for malaria, Francisco Lopera who discovered the "Paisa Mutation" or a type of early-onset Alzheimer's, Rodolfo Llinás known for his study of the intrinsic neurons properties and the theory of a syndrome that had changed the way of understanding the functioning of the brain, Jairo Quiroga Puello recognized for his studies on the characterization of synthetic substances which can be used to fight fungus, tumors, tuberculosis and even some viruses and Ángela Restrepo who established accurate diagnoses and treatments to combat the effects of a disease caused by Paracoccidioides brasiliensis. + +Demographics + +With an estimated 50 million people in 2020, Colombia is the third-most populous country in Latin America, after Brazil and Mexico. At the beginning of the 20th century, Colombia's population was approximately 4 million. Since the early 1970s Colombia has experienced steady declines in its fertility, mortality, and population growth rates. The population growth rate for 2016 is estimated to be 0.9%. About 26.8% of the population were 15 years old or younger, 65.7% were between 15 and 64 years old, and 7.4% were over 65 years old. The proportion of older persons in the total population has begun to increase substantially. Colombia is projected to have a population of 55.3 million by 2050. + +The population is concentrated in the Andean highlands and along the Caribbean coast, also the population densities are generally higher in the Andean region. The nine eastern lowland departments, comprising about 54% of Colombia's area, have less than 6% of the population. Traditionally a rural society, movement to urban areas was very heavy in the mid-20th century, and Colombia is now one of the most urbanized countries in Latin America. The urban population increased from 31% of the total in 1938 to nearly 60% in 1973, and by 2014 the figure stood at 76%. The population of Bogotá alone has increased from just over 300,000 in 1938 to approximately 8 million today. In total seventy-two cities now have populations of 100,000 or more (2015). Colombia has the world's largest populations of internally displaced persons (IDPs), estimated to be up to 4.9 million people. + +The life expectancy is 74.8 years in 2015 and infant mortality is 13.1 per thousand in 2016. In 2015, 94.58% of adults and 98.66% of youth are literate and the government spends about 4.49% of its GDP on education. + +Languages + +More than 99.2% of Colombians speak Spanish, also called Castilian; 65 Amerindian languages, two Creole languages, the Romani language and Colombian Sign Language are also used in the country. English has official status in the archipelago of San Andrés, Providencia and Santa Catalina. + +Including Spanish, a total of 101 languages are listed for Colombia in the Ethnologue database. The specific number of spoken languages varies slightly since some authors consider as different languages what others consider to be varieties or dialects of the same language. Best estimates recorded 71 languages that are spoken in-country today – most of which belong to the Chibchan, Tucanoan, Bora–Witoto, Guajiboan, Arawakan, Cariban, Barbacoan, and Saliban language families. There are currently about 850,000 speakers of native languages. + +Ethnic groups + +Colombia is ethnically diverse, its people descending from the original Amerindian inhabitants, Spanish colonists, Africans originally brought to the country as slaves, and 20th-century immigrants from Europe and the Middle East, all contributing to a diverse cultural heritage. The demographic distribution reflects a pattern that is influenced by colonial history. Whites live all throughout the country, mainly in urban centers and the burgeoning highland and coastal cities. The populations of the major cities also include mestizos. Mestizo campesinos (people living in rural areas) also live in the Andean highlands where some Spanish conquerors mixed with the women of Amerindian chiefdoms. Mestizos include artisans and small tradesmen that have played a major part in the urban expansion of recent decades. + +The 2018 census reported that the "non-ethnic population", consisting of whites and mestizos (those of mixed European and Amerindian ancestry), constituted 87.6% of the national population. 6.7% is of African ancestry. Indigenous Amerindians constitute 4.3% of the population. Raizal people constitute 0.06% of the population. Palenquero people constitute 0.02% of the population. 0.01% of the population are Roma. + +The Federal Research Division estimated that the 86% of the population that did not consider themselves part of one of the ethnic groups indicated by the 2006 census was divided into 49% Mestizo or of mixed European and Amerindian ancestry, and 37% White, mainly of Spanish lineage, but there is also a large population of Middle East descent; in some sectors of society there is a considerable input of German and Italian ancestry. + +Many of the Indigenous peoples experienced a reduction in population during the Spanish rule and many others were absorbed into the mestizo population, but the remainder currently represents over eighty distinct cultures. Reserves (resguardos) established for indigenous peoples occupy (27% of the country's total) and are inhabited by more than 800,000 people. Some of the largest indigenous groups are the Wayuu, the Paez, the Pastos, the Emberá and the Zenú. The departments of La Guajira, Cauca, Nariño, Córdoba and Sucre have the largest indigenous populations. + +The Organización Nacional Indígena de Colombia (ONIC), founded at the first National Indigenous Congress in 1982, is an organization representing the indigenous peoples of Colombia. In 1991, Colombia signed and ratified the current international law concerning indigenous peoples, Indigenous and Tribal Peoples Convention, 1989. + +Sub-Saharan Africans were brought as slaves, mostly to the coastal lowlands, beginning early in the 16th century and continuing into the 19th century. Large Afro-Colombian communities are found today on the Pacific Coast. Numerous Jamaicans migrated mainly to the islands of San Andres and Providencia. A number of other Europeans and North Americans migrated to the country in the late 19th and early 20th centuries, including people from the former USSR during and after the Second World War. + +Many immigrant communities have settled on the Caribbean coast, in particular recent immigrants from the Middle East and Europe. Barranquilla (the largest city of the Colombian Caribbean) and other Caribbean cities have the largest populations of Lebanese, Palestinian, and other Levantines. There are also important communities of Romanis and Jews. There is a major migration trend of Venezuelans, due to the political and economic situation in Venezuela. In August 2019, Colombia offered citizenship to more than 24,000 children of Venezuelan refugees who were born in Colombia. + +Religion + +The National Administrative Department of Statistics (DANE) does not collect religious statistics, and accurate reports are difficult to obtain. However, based on various studies and a survey, about 90% of the population adheres to Christianity, the majority of which (70.9%–79%) are Roman Catholic, while a significant minority (16.7%) adhere to Protestantism (primarily Evangelicalism). Some 4.7% of the population is atheist or agnostic, while 3.5% claim to believe in God but do not follow a specific religion. 1.8% of Colombians adhere to Jehovah's Witnesses and Adventism and less than 1% adhere to other religions, such as the Baháʼí Faith, Islam, Judaism, Buddhism, Mormonism, Hinduism, Indigenous religions, Hare Krishna movement, Rastafari movement, Eastern Orthodox Church, and spiritual studies. The remaining people either did not respond or replied that they did not know. In addition to the above statistics, 35.9% of Colombians reported that they did not practice their faith actively. + +While Colombia remains a mostly Roman Catholic country by baptism numbers, the 1991 Colombian constitution guarantees freedom of religion and all religious faiths and churches are equally free before the law. + +Health + +The overall life expectancy in Colombia at birth is 79.3 years (76.7 years for males and 81.9 years for females). Healthcare reforms have led to massive improvements in the healthcare systems of the country, with health standards in Colombia improving very much since the 1980s. The new system has widened population coverage by the social and health security system from 21% (pre-1993) to 96% in 2012. In 2017, the government declared a cancer research and treatment center as a Project of National Strategic Interest. + +A 2016 study conducted by América Economía magazine ranked 21 Colombian health care institutions among the top 44 in Latin America, amounting to 48 percent of the total. In 2022, 26 Colombian hospitals were among the 61 best in Latin America (42% total). Also in 2023, two Colombian hospitals were among the Top 75 of the world. + +Education + +The educational experience of many Colombian children begins with attendance at a preschool academy until age five (Educación preescolar). Basic education (Educación básica) is compulsory by law. It has two stages: Primary basic education (Educación básica primaria) which goes from first to fifth grade – children from six to ten years old, and Secondary basic education (Educación básica secundaria), which goes from sixth to ninth grade. Basic education is followed by Middle vocational education (Educación media vocacional) that comprises the tenth and eleventh grades. It may have different vocational training modalities or specialties (academic, technical, business, and so on.) according to the curriculum adopted by each school. + +After the successful completion of all the basic and middle education years, a high-school diploma is awarded. The high-school graduate is known as a bachiller, because secondary basic school and middle education are traditionally considered together as a unit called bachillerato (sixth to eleventh grade). Students in their final year of middle education take the ICFES test (now renamed Saber 11) to gain access to higher education (Educación superior). This higher education includes undergraduate professional studies, technical, technological and intermediate professional education, and post-graduate studies. Technical professional institutions of Higher Education are also opened to students holder of a qualification in Arts and Business. This qualification is usually awarded by the SENA after a two years curriculum. + +Bachilleres (high-school graduates) may enter into a professional undergraduate career program offered by a university; these programs last up to five years (or less for technical, technological and intermediate professional education, and post-graduate studies), even as much to six to seven years for some careers, such as medicine. In Colombia, there is not an institution such as college; students go directly into a career program at a university or any other educational institution to obtain a professional, technical or technological title. Once graduated from the university, people are granted a (professional, technical or technological) diploma and licensed (if required) to practice the career they have chosen. For some professional career programs, students are required to take the Saber-Pro test, in their final year of undergraduate academic education. + +Public spending on education as a proportion of gross domestic product in 2015 was 4.49%. This represented 15.05% of total government expenditure. The primary and secondary gross enrolment ratios stood at 113.56% and 98.09% respectively. School-life expectancy was 14.42 years. A total of 94.58% of the population aged 15 and older were recorded as literate, including 98.66% of those aged 15–24. + +Crime + +Urbanization +Colombia is a highly urbanized country with 77.1% of the population living in urban areas. The largest cities in the country are Bogotá, with 7,387,400 inhabitants, Medellín, with 2,382,399 inhabitants, Cali, with 2,172,527 inhabitants, and Barranquilla, with 1,205,284 inhabitants. + +Culture + +Colombia lies at the crossroads of Latin America and the broader American continent, and as such has been hit by a wide range of cultural influences. Native American, Spanish and other European, African, American, Caribbean, and Middle Eastern influences, as well as other Latin American cultural influences, are all present in Colombia's modern culture. Urban migration, industrialization, globalization, and other political, social and economic changes have also left an impression. + +Many national symbols, both objects and themes, have arisen from Colombia's diverse cultural traditions and aim to represent what Colombia, and the Colombian people, have in common. Cultural expressions in Colombia are promoted by the government through the Ministry of Culture. + +Literature + +Colombian literature dates back to pre-Columbian era; a notable example of the period is the epic poem known as the Legend of Yurupary. In Spanish colonial times, notable writers include Juan de Castellanos (Elegías de varones ilustres de Indias), Hernando Domínguez Camargo and his epic poem to San Ignacio de Loyola, Pedro Simón, Juan Rodríguez Freyle (El Carnero), Lucas Fernández de Piedrahita, and the nun Francisca Josefa de Castillo, representative of mysticism. + +Post-independence literature linked to Romanticism highlighted Antonio Nariño, José Fernández Madrid, Camilo Torres Tenorio and Francisco Antonio Zea. In the second half of the nineteenth century and early twentieth century the literary genre known as costumbrismo became popular; great writers of this period were Tomás Carrasquilla, Jorge Isaacs and Rafael Pombo (the latter of whom wrote notable works of children's literature). Within that period, authors such as José Asunción Silva, José Eustasio Rivera, León de Greiff, Porfirio Barba-Jacob and José María Vargas Vila developed the modernist movement. In 1872, Colombia established the Colombian Academy of Language, the first Spanish language academy in the Americas. Candelario Obeso wrote the groundbreaking Cantos Populares de mi Tierra (1877), the first book of poetry by an Afro-Colombian author. + +Between 1939 and 1940 seven books of poetry were published under the name Stone and Sky in the city of Bogotá that significantly influenced the country; they were edited by the poet Jorge Rojas. In the following decade, Gonzalo Arango founded the movement of "nothingness" in response to the violence of the time; he was influenced by nihilism, existentialism, and the thought of another great Colombian writer: Fernando González Ochoa. During the boom in Latin American literature, successful writers emerged, led by Nobel laureate Gabriel García Márquez and his magnum opus, One Hundred Years of Solitude, Eduardo Caballero Calderón, Manuel Mejía Vallejo, and Álvaro Mutis, a writer who was awarded the Cervantes Prize and the Prince of Asturias Award for Letters. Other leading contemporary authors are Fernando Vallejo, William Ospina (Rómulo Gallegos Prize) and Germán Castro Caycedo. + +Visual arts + +Colombian art has over 3,000 years of history. Colombian artists have captured the country's changing political and cultural backdrop using a range of styles and mediums. There is archeological evidence of ceramics being produced earlier in Colombia than anywhere else in the Americas, dating as early as 3,000 BCE. + +The earliest examples of gold craftsmanship have been attributed to the Tumaco people of the Pacific coast and date to around 325 BCE. Roughly between 200 BCE and 800 CE, the San Agustín culture, masters of stonecutting, entered its "classical period". They erected raised ceremonial centers, sarcophagi, and large stone monoliths depicting anthropomorphic and zoomorphic forms out of stone. + +Colombian art has followed the trends of the time, so during the 16th to 18th centuries, Spanish Catholicism had a huge influence on Colombian art, and the popular baroque style was replaced with rococo when the Bourbons ascended to the Spanish crown. During this era, in the Spanish colony, the most important Neogranadine (Colombian) painters were Gregorio Vásquez de Arce y Ceballos, Gaspar de Figueroa, Baltasar Vargas de Figueroa, Baltasar de Figueroa (the Elder), Antonio Acero de la Cruz and Joaquín Gutiérrez, of which their works are preserved. Also important was Alonso de Narváez who, although born in the Province of Seville, spent most of his life in colonial Colombia, also the Italian Angelino Medoro, lived in Colombia and Peru, and left works of art preserved in several churches in Tunja city. + +During the mid-19th century, one of the most remarkable painters was Ramón Torres Méndez, who produced a series of good quality paintings depicting the people and their customs of different Colombian regions. Also noteworthy in the 19th century were Andrés de Santa María, Pedro José Figueroa, Epifanio Garay, Mercedes Delgado Mallarino, José María Espinosa, Ricardo Acevedo Bernal, between many others. + +More recently, Colombian artists Pedro Nel Gómez and Santiago Martínez Delgado started the Colombian Murial Movement in the 1940s, featuring the neoclassical features of Art Deco. Since the 1950s, the Colombian art started to have a distinctive point of view, reinventing traditional elements under the concepts of the 20th century. Examples of this are the Greiff portraits by Ignacio Gómez Jaramillo, showing what the Colombian art could do with the new techniques applied to typical Colombian themes. Carlos Correa, with his paradigmatic "Naturaleza muerta en silencio" (silent dead nature), combines geometrical abstraction and cubism. Alejandro Obregón is often considered as the father of modern Colombian painting, and one of the most influential artist in this period, due to his originality, the painting of Colombian landscapes with symbolic and expressionist use of animals, (specially the Andean condor). Fernando Botero, Omar Rayo, Enrique Grau, Édgar Negret, David Manzur, Rodrigo Arenas Betancourt, Oscar Murillo, Doris Salcedo and Oscar Muñoz are some of the Colombian artists featured at the international level. + +The Colombian sculpture from the sixteenth to 18th centuries was mostly devoted to religious depictions of ecclesiastic art, strongly influenced by the Spanish schools of sacred sculpture. During the early period of the Colombian republic, the national artists were focused in the production of sculptural portraits of politicians and public figures, in a plain neoclassicist trend. During the 20th century, the Colombian sculpture began to develop a bold and innovative work with the aim of reaching a better understanding of national sensitivity. + +Colombian photography was marked by the arrival of the daguerreotype. Jean-Baptiste Louis Gros was who brought the daguerreotype process to Colombia in 1841. The Piloto public library has Latin America's largest archive of negatives, containing 1.7 million antique photographs covering Colombia 1848 until 2005. + +The Colombian press has promoted the work of the cartoonists. In recent decades, fanzines, internet and independent publishers have been fundamental to the growth of the comic in Colombia. + +Architecture + +Throughout the times, there have been a variety of architectural styles, from those of indigenous peoples to contemporary ones, passing through colonial (military and religious), Republican, transition and modern styles. + +Ancient habitation areas, longhouses, crop terraces, roads as the Inca road system, cemeteries, hypogeums and necropolises are all part of the architectural heritage of indigenous peoples. Some prominent indigenous structures are the preceramic and ceramic archaeological site of Tequendama, Tierradentro (a park that contains the largest concentration of pre-Columbian monumental shaft tombs with side chambers), the largest collection of religious monuments and megalithic sculptures in South America, located in San Agustín, Huila, Lost city (an archaeological site with a series of terraces carved into the mountainside, a net of tiled roads, and several circular plazas), and the large villages mainly built with stone, wood, cane, and mud. +Architecture during the period of conquest and colonization is mainly derived of adapting European styles to local conditions, and Spanish influence, especially Andalusian and Extremaduran, can be easily seen. When Europeans founded cities two things were making simultaneously: the dimensioning of geometrical space (town square, street), and the location of a tangible point of orientation. The construction of forts was common throughout the Caribbean and in some cities of the interior, because of the dangers posed to Spanish colonial settlements from English, French and Dutch pirates and hostile indigenous groups. Churches, chapels, schools, and hospitals belonging to religious orders have a great urban influence. Baroque architecture is used in military buildings and public spaces. Marcelino Arroyo, Francisco José de Caldas and Domingo de Petrés were great representatives of neo-classical architecture. + +The National Capitol is a great representative of romanticism. Wood was extensively used in doors, windows, railings, and ceilings during the colonization of Antioquia. The Caribbean architecture acquires a strong Arabic influence. The Teatro Colón in Bogotá is a lavish example of architecture from the 19th century. The quintas houses with innovations in the volumetric conception are some of the best examples of the Republican architecture; the Republican action in the city focused on the design of three types of spaces: parks with forests, small urban parks and avenues and the Gothic style was most commonly used for the design of churches. + +Deco style, modern neoclassicism, eclecticism folklorist and art deco ornamental resources significantly influenced the architecture of Colombia, especially during the transition period. Modernism contributed with new construction technologies and new materials (steel, reinforced concrete, glass and synthetic materials) and the topology architecture and lightened slabs system also have a great influence. The most influential architects of the modern movement were Rogelio Salmona and Fernando Martínez Sanabria. + +The contemporary architecture of Colombia is designed to give greater importance to the materials, this architecture takes into account the specific natural and artificial geographies and is also an architecture that appeals to the senses. The conservation of the architectural and urban heritage of Colombia has been promoted in recent years. + +Music + +Colombia has a vibrant collage of talent that touches a full spectrum of rhythms. Musicians, composers, music producers and singers from Colombia are recognized internationally such as Shakira, Juanes, Carlos Vives and others. Colombian music blends European-influenced guitar and song structure with large gaita flutes and percussion instruments from the indigenous population, while its percussion structure and dance forms come from Africa. Colombia has a diverse and dynamic musical environment. + +Guillermo Uribe Holguín, an important cultural figure in the National Symphony Orchestra of Colombia, Luis Antonio Calvo and Blas Emilio Atehortúa are some of the greatest exponents of the art music. The Bogotá Philharmonic Orchestra is one of the most active orchestras in Colombia. + +Caribbean music has many vibrant rhythms, such as cumbia (it is played by the maracas, the drums, the gaitas and guacharaca), porro (it is a monotonous but joyful rhythm), mapalé (with its fast rhythm and constant clapping) and the "vallenato", which originated in the northern part of the Caribbean coast (the rhythm is mainly played by the caja, the guacharaca, and accordion). + +The music from the Pacific coast, such as the currulao, is characterized by its strong use of drums (instruments such as the native marimba, the conunos, the bass drum, the side drum, and the cuatro guasas or tubular rattle). An important rhythm of the south region of the Pacific coast is the contradanza (it is used in dance shows due to the striking colours of the costumes). Marimba music, traditional chants and dances from the Colombia South Pacific region are on UNESCO's Representative List of the Intangible Cultural Heritage of Humanity. + +Important musical rhythms of the Andean Region are the danza (dance of Andean folklore arising from the transformation of the European contredance), the bambuco (it is played with guitar, tiple and mandolin, the rhythm is danced by couples), the pasillo (a rhythm inspired by the Austrian waltz and the Colombian "danza", the lyrics have been composed by well-known poets), the guabina (the tiple, the bandola and the requinto are the basic instruments), the sanjuanero (it originated in Tolima and Huila Departments, the rhythm is joyful and fast). Apart from these traditional rhythms, salsa music has spread throughout the country, and the city of Cali is considered by many salsa singers to be 'The New Salsa Capital of the World'. + +The instruments that distinguish the music of the Eastern Plains are the harp, the cuatro (a type of four-stringed guitar) and maracas. Important rhythms of this region are the joropo (a fast rhythm and there is also tapping as a result of its flamenco ancestry) and the galeron (it is heard a lot while cowboys are working). + +The music of the Amazon region is strongly influenced by the indigenous religious practices. Some of the musical instruments used are the manguaré (a musical instrument of ceremonial type, consisting of a pair of large cylindrical drums), the quena (melodic instrument), the rondador, the congas, bells, and different types of flutes. + +The music of the Archipelago of San Andrés, Providencia and Santa Catalina is usually accompanied by a mandolin, a tub-bass, a jawbone, a guitar and maracas. Some popular archipelago rhythms are the Schottische, the Calypso, the Polka and the Mento. + +Popular culture + +Theater was introduced in Colombia during the Spanish colonization in 1550 through zarzuela companies. Colombian theater is supported by the Ministry of Culture and a number of private and state owned organizations. The Ibero-American Theater Festival of Bogotá is the cultural event of the highest importance in Colombia and one of the biggest theater festivals in the world. Other important theater events are: The Festival of Puppet The Fanfare (Medellín), The Manizales Theater Festival, The Caribbean Theatre Festival (Santa Marta) and The Art Festival of Popular Culture "Cultural Invasion" (Bogotá). + +Although the Colombian cinema is young as an industry, more recently the film industry was growing with support from the Film Act passed in 2003. Many film festivals take place in Colombia, but the two most important are the Cartagena Film Festival, which is the oldest film festival in Latin America, and the Bogotá Film Festival. + +Some important national circulation newspapers are El Tiempo and El Espectador. Television in Colombia has two privately owned TV networks and three state-owned TV networks with national coverage, as well as six regional TV networks and dozens of local TV stations. Private channels, RCN and Caracol are the highest-rated. The regional channels and regional newspapers cover a department or more and its content is made in these particular areas. + +Colombia has three major national radio networks: Radiodifusora Nacional de Colombia, a state-run national radio; Caracol Radio and RCN Radio, privately owned networks with hundreds of affiliates. There are other national networks, including Cadena Super, Todelar, and Colmundo. Many hundreds of radio stations are registered with the Ministry of Information Technologies and Communications. + +Cuisine + +Colombia's varied cuisine is influenced by its diverse fauna and flora as well as the cultural traditions of the ethnic groups. Colombian dishes and ingredients vary widely by region. Some of the most common ingredients are: cereals such as rice and maize; tubers such as potato and cassava; assorted legumes; meats, including beef, chicken, pork and goat; fish; and seafood. Colombia cuisine also features a variety of tropical fruits such as cape gooseberry, feijoa, arazá, dragon fruit, mangostino, granadilla, papaya, guava, mora (blackberry), lulo, soursop and passionfruit. Colombia is one of the world's largest consumers of fruit juices. + +Among the most representative appetizers and soups are patacones (fried green plantains), sancocho de gallina (chicken soup with root vegetables) and ajiaco (potato and corn soup). Representative snacks and breads are pandebono, arepas (corn cakes), aborrajados (fried sweet plantains with cheese), torta de choclo, empanadas and almojábanas. Representative main courses are bandeja paisa, lechona tolimense, mamona, tamales and fish dishes (such as arroz de lisa), especially in coastal regions where kibbeh, suero, costeño cheese and carimañolas are also eaten. Representative side dishes are papas chorreadas (potatoes with cheese), remolachas rellenas con huevo duro (beets stuffed with hard-boiled egg) and arroz con coco (coconut rice). Organic food is a current trend in big cities, although in general across the country the fruits and veggies are very natural and fresh. + +Representative desserts are buñuelos, natillas, Maria Luisa cake, bocadillo made of guayaba (guava jelly), cocadas (coconut balls), casquitos de guayaba (candied guava peels), torta de natas, obleas, flan de mango, roscón, milhoja, manjar blanco, dulce de feijoa, dulce de papayuela, torta de mojicón, and esponjado de curuba. Typical sauces (salsas) are hogao (tomato and onion sauce) and Colombian-style ají. + +Some representative beverages are coffee (Tinto), champús, cholado, lulada, avena colombiana, sugarcane juice, aguapanela, aguardiente, hot chocolate and fresh fruit juices (often made with water or milk). + +Sports + +Tejo is Colombia's national sport and is a team sport that involves launching projectiles to hit a target. But of all sports in Colombia, football is the most popular. Colombia was the champion of the 2001 Copa América, in which they set a new record of being undefeated, conceding no goals and winning each match. Colombia has been awarded "mover of the year" twice. + +Colombia is a hub for roller skaters. The national team is a perennial powerhouse at the World Roller Speed Skating Championships. Colombia has traditionally been very good in cycling and a large number of Colombian cyclists have triumphed in major competitions of cycling. + +Baseball is popular in cities like Cartagena and Barranquilla. Of those cities have come good players like: Orlando Cabrera, Édgar Rentería, who was champion of the World Series in 1997 and 2010 and others who have played in Major League Baseball. Colombia was world amateur champion in 1947 and 1965. + +Boxing is one of the sports that has produced more world champions for Colombia. +Motorsports also occupies an important place in the sporting preferences of Colombians; Juan Pablo Montoya is a race car driver known for winning 7 Formula One events. Colombia also has excelled in sports such as BMX, judo, shooting sport, taekwondo, wrestling, high diving and athletics, also has a long tradition in weightlifting and bowling. + +See also + + Index of Colombia-related articles + Outline of Colombia + Crime in Colombia + +Notes + +References + +External links + +General information + Colombia at Britannica.com + + Colombia at UCB Libraries GovPubs + + Colombia. The World Factbook. Central Intelligence Agency. + Key Development Forecasts for Colombia from International Futures + Official investment portal + Official Colombia Tourism Website + Study Spanish in Colombia + National Administrative Department of Statistics + +Government + Colombia Online Government website + +Culture + Ministry of Culture + +Geography + National parks of Colombia + + + +Andean Community +Constitutional republics +Countries in South America +Former Spanish colonies +Member states of the United Nations +OECD members +Republics +Spanish-speaking countries and territories +States and territories established in 1810 +Transcontinental countries +Citizen Kane is a 1941 American drama film directed by, produced by, and starring Orson Welles. Welles and Herman J. Mankiewicz wrote the screenplay. The picture was Welles' first feature film. Citizen Kane is frequently cited as the greatest film ever made. For 50 consecutive years, it stood at number 1 in the British Film Institute's Sight & Sound decennial poll of critics, and it topped the American Film Institute's 100 Years ... 100 Movies list in 1998, as well as its 2007 update. The film was nominated for Academy Awards in nine categories and it won for Best Writing (Original Screenplay) by Mankiewicz and Welles. Citizen Kane is praised for Gregg Toland's cinematography, Robert Wise's editing, Bernard Herrmann's music, and its narrative structure, all of which have been considered innovative and precedent-setting. + +The quasi-biographical film examines the life and legacy of Charles Foster Kane, played by Welles, a composite character based on American media barons William Randolph Hearst and Joseph Pulitzer, Chicago tycoons Samuel Insull and Harold McCormick, as well as aspects of the screenwriters' own lives. Upon its release, Hearst prohibited any mention of the film in his newspapers. + +After the Broadway success of Welles's Mercury Theatre and the controversial 1938 radio broadcast "The War of the Worlds" on The Mercury Theatre on the Air, Welles was courted by Hollywood. He signed a contract with RKO Pictures in 1939. Although it was unusual for an untried director, he was given freedom to develop his own story, to use his own cast and crew, and to have final cut privilege. Following two abortive attempts to get a project off the ground, he wrote the screenplay for Citizen Kane, collaborating with Herman J. Mankiewicz. Principal photography took place in 1940, the same year its innovative trailer was shown, and the film was released in 1941. + +Although it was a critical success, Citizen Kane failed to recoup its costs at the box office. The film faded from view after its release, but it returned to public attention when it was praised by French critics such as André Bazin and re-released in 1956. In 1958, the film was voted number 9 on the prestigious Brussels 12 list at the 1958 World Expo. Citizen Kane was selected by the Library of Congress as an inductee of the 1989 inaugural group of 25 films for preservation in the United States National Film Registry for being "culturally, historically, or aesthetically significant". + +Plot + +In a mansion called Xanadu, part of a vast palatial estate in Florida, the elderly Charles Foster Kane is on his deathbed. Holding a snow globe, he utters his last word, "Rosebud", and dies. A newsreel obituary tells the life story of Kane, an enormously wealthy newspaper publisher and industrial magnate. Kane's death becomes sensational news around the world, and the newsreel's producer tasks reporter Jerry Thompson with discovering the meaning of "Rosebud". + +Thompson sets out to interview Kane's friends and associates. He tries to approach his second wife, Susan Alexander Kane, now an alcoholic who runs her own nightclub, but she refuses to talk to him. Thompson goes to the private archive of the late banker Walter Parks Thatcher. Through Thatcher's written memoirs, Thompson learns about Kane's rise from a Colorado boarding house and the decline of his fortune. + +In 1871, gold was discovered through a mining deed belonging to Kane's mother, Mary Kane. She hired Thatcher to establish a trust that would provide for Kane's education and assume guardianship of him. While the parents and Thatcher discussed arrangements inside the boarding house, the young Kane played happily with a sled in the snow outside. When Kane's parents introduced him to Thatcher, the boy struck Thatcher with his sled and attempted to run away. + +By the time Kane gained control of his trust at the age of 25, the mine's productivity and Thatcher's prudent investing had made Kane one of the richest men in the world. Kane took control of the New York Inquirer newspaper and embarked on a career of yellow journalism, publishing scandalous articles that attacked Thatcher's (and his own) business interests. Kane sold his newspaper empire to Thatcher after the 1929 stock market crash left Kane short of cash. + +Thompson interviews Kane's personal business manager, Mr. Bernstein. Bernstein recalls that Kane hired the best journalists available to build the Inquirers circulation. Kane rose to power by successfully manipulating public opinion regarding the Spanish–American War and marrying Emily Norton, the niece of the President of the United States. + +Thompson interviews Kane's estranged best friend, Jedediah Leland, in a retirement home. Leland says that Kane's marriage to Emily disintegrated over the years, and he began an affair with amateur singer Susan Alexander while running for Governor of New York. Both his wife and his political opponent discovered the affair, and the public scandal ended his political career. Kane married Susan and forced her into a humiliating operatic career for which she had neither the talent nor the ambition, even building a large opera house for her. After Leland began to write a negative review of Susan's disastrous opera debut, Kane fired him but finished the negative review and printed it. Susan protested that she never wanted the opera career anyway, but Kane forced her to continue the season. + +Susan consents to an interview with Thompson and describes the aftermath of her opera career. She attempted suicide, and so Kane finally allowed her to abandon singing. After many unhappy years and after being hit by Kane, she finally decided to leave him. Kane's butler Raymond recounts that, after Susan left him, he began violently destroying the contents of her bedroom. When he happened upon a snow globe, he grew calm and said "Rosebud". Thompson concludes that he cannot solve the mystery and that the meaning of Kane's last word will remain a mystery. + +Back at Xanadu, Kane's belongings are cataloged or discarded by the staff. They find the sled on which eight-year-old Kane was playing on the day that he was taken from his home in Colorado and throw it into a furnace with other items. Behind their backs, the sled slowly burns and its trade name, printed on top, becomes visible through the flames: "Rosebud". + +Cast + +The beginning of the film's ending credits states that "Most of the principal actors in Citizen Kane are new to motion pictures. The Mercury Theatre is proud to introduce them." The cast is then listed in the following order, with Orson Welles' credit for playing Charles Foster Kane appearing last: + + Joseph Cotten as Jedediah Leland, Kane's best friend and a reporter for The Inquirer. Cotten also appears (hidden in darkness) in the News on the March screening room. + Dorothy Comingore as Susan Alexander Kane, Kane's mistress and second wife. + Agnes Moorehead as Mary Kane, Kane's mother. + Ruth Warrick as Emily Monroe Norton Kane, Kane's first wife. + Ray Collins as Jim W. Gettys, Kane's political rival for the post of Governor of New York. + Erskine Sanford as Herbert Carter, editor of The Inquirer. Sanford also appears (hidden in darkness) in the News on the March screening room. + Everett Sloane as Mr. Bernstein, Kane's friend and employee at The Inquirer. + William Alland as Jerry Thompson, a reporter for News on the March. Alland also voices the narrator of the News on the March newsreel. + Paul Stewart as Raymond, Kane's butler. + George Coulouris as Walter Parks Thatcher, a banker who becomes Kane's legal guardian. + Fortunio Bonanova as Signor Matiste, vocal coach of Susan Alexander Kane. + Gus Schilling as John, headwaiter at the El Rancho nightclub. Schilling also appears (hidden in darkness) in the News on the March screening room. + Philip Van Zandt as Mr. Rawlston, News on the March open at the producer. + Georgia Backus as Bertha Anderson, attendant at the library of Walter Parks Thatcher. + Harry Shannon as Jim Kane, Kane's father. + Sonny Bupp as Charles Foster Kane III, Kane's son. + Buddy Swan as Charles Foster Kane, age eight. + Orson Welles as Charles Foster Kane, a wealthy newspaper publisher. + +Additionally, Charles Bennett appears as the entertainer at the head of the chorus line in the Inquirer party sequence, and cinematographer Gregg Toland makes a cameo appearance as an interviewer depicted in part of the News on the March newsreel. Actor Alan Ladd, still unknown at that time, makes a small appearance as a reporter smoking a pipe at the end of the film. + +Production + +Development + +Hollywood had shown interest in Welles as early as 1936. He turned down three scripts sent to him by Warner Bros. In 1937, he declined offers from David O. Selznick, who asked him to head his film company's story department, and William Wyler, who wanted him for a supporting role in Wuthering Heights. "Although the possibility of making huge amounts of money in Hollywood greatly attracted him," wrote biographer Frank Brady, "he was still totally, hopelessly, insanely in love with the theater, and it is there that he had every intention of remaining to make his mark." + +Following "The War of the Worlds" broadcast of his CBS radio series The Mercury Theatre on the Air, Welles was lured to Hollywood with a remarkable contract. RKO Pictures studio head George J. Schaefer wanted to work with Welles after the notorious broadcast, believing that Welles had a gift for attracting mass attention. RKO was also uncharacteristically profitable and was entering into a series of independent production contracts that would add more artistically prestigious films to its roster. Throughout the spring and early summer of 1939, Schaefer constantly tried to lure the reluctant Welles to Hollywood. Welles was in financial trouble after failure of his plays Five Kings and The Green Goddess. At first he simply wanted to spend three months in Hollywood and earn enough money to pay his debts and fund his next theatrical season. Welles first arrived on July 20, 1939, and on his first tour, he called the movie studio "the greatest electric train set a boy ever had". + +Welles signed his contract with RKO on August 21, which stipulated that Welles would act in, direct, produce and write two films. Mercury would get $100,000 for the first film by January 1, 1940, plus 20% of profits after RKO recouped $500,000, and $125,000 for a second film by January 1, 1941, plus 20% of profits after RKO recouped $500,000. The most controversial aspect of the contract was granting Welles complete artistic control of the two films so long as RKO approved both projects' stories and so long as the budget did not exceed $500,000. RKO executives would not be allowed to see any footage until Welles chose to show it to them, and no cuts could be made to either film without Welles's approval. Welles was allowed to develop the story without interference, select his own cast and crew, and have the right of final cut. Granting the final cut privilege was unprecedented for a studio because it placed artistic considerations over financial investment. The contract was deeply resented in the film industry, and the Hollywood press took every opportunity to mock RKO and Welles. Schaefer remained a great supporter and saw the unprecedented contract as good publicity. Film scholar Robert L. Carringer wrote: "The simple fact seems to be that Schaefer believed Welles was going to pull off something really big almost as much as Welles did himself." + +Welles spent the first five months of his RKO contract trying to get his first project going, without success. "They are laying bets over on the RKO lot that the Orson Welles deal will end up without Orson ever doing a picture there," wrote The Hollywood Reporter. It was agreed that Welles would film Heart of Darkness, previously adapted for The Mercury Theatre on the Air, which would be presented entirely through a first-person camera. After elaborate pre-production and a day of test shooting with a hand-held camera—unheard of at the time—the project never reached production because Welles was unable to trim $50,000 from its budget. Schaefer told Welles that the $500,000 budget could not be exceeded; as war loomed, revenue was declining sharply in Europe by the fall of 1939. + +He then started work on the idea that became Citizen Kane. Knowing the script would take time to prepare, Welles suggested to RKO that while that was being done—"so the year wouldn't be lost"—he make a humorous political thriller. Welles proposed The Smiler with a Knife, from a novel by Cecil Day-Lewis. When that project stalled in December 1939, Welles began brainstorming other story ideas with screenwriter Herman J. Mankiewicz, who had been writing Mercury radio scripts. "Arguing, inventing, discarding, these two powerful, headstrong, dazzlingly articulate personalities thrashed toward Kane", wrote biographer Richard Meryman. + +Screenplay + +One of the long-standing controversies about Citizen Kane has been the authorship of the screenplay. Welles conceived the project with screenwriter Herman J. Mankiewicz, who was writing radio plays for Welles's CBS Radio series, The Campbell Playhouse. Mankiewicz based the original outline on the life of William Randolph Hearst, whom he knew socially and came to hate after being exiled from Hearst's circle. + +In February 1940 Welles supplied Mankiewicz with 300 pages of notes and put him under contract to write the first draft screenplay under the supervision of John Houseman, Welles's former partner in the Mercury Theatre. Welles later explained, "I left him on his own finally, because we'd started to waste too much time haggling. So, after mutual agreements on storyline and character, Mank went off with Houseman and did his version, while I stayed in Hollywood and wrote mine." Taking these drafts, Welles drastically condensed and rearranged them, then added scenes of his own. The industry accused Welles of underplaying Mankiewicz's contribution to the script, but Welles countered the attacks by saying, "At the end, naturally, I was the one making the picture, after all—who had to make the decisions. I used what I wanted of Mank's and, rightly or wrongly, kept what I liked of my own." + +The terms of the contract stated that Mankiewicz was to receive no credit for his work, as he was hired as a script doctor. Before he signed the contract Mankiewicz was particularly advised by his agents that all credit for his work belonged to Welles and the Mercury Theatre, the "author and creator". As the film neared release, however, Mankiewicz began wanting a writing credit for the film and even threatened to take out full-page advertisements in trade papers and to get his friend Ben Hecht to write an exposé for The Saturday Evening Post. Mankiewicz also threatened to go to the Screen Writers Guild and claim full credit for writing the entire script by himself. + +After lodging a protest with the Screen Writers Guild, Mankiewicz withdrew it, then vacillated. The question was resolved in January 1941 when the studio, RKO Pictures, awarded Mankiewicz credit. The guild credit form listed Welles first, Mankiewicz second. Welles's assistant Richard Wilson said that the person who circled Mankiewicz's name in pencil, then drew an arrow that put it in first place, was Welles. The official credit reads, "Screenplay by Herman J. Mankiewicz and Orson Welles". Mankiewicz's rancor toward Welles grew over the remaining twelve years of his life. + +Questions over the authorship of the Citizen Kane screenplay were revived in 1971 by influential film critic Pauline Kael, whose controversial 50,000-word essay "Raising Kane" was commissioned as an introduction to the shooting script in The Citizen Kane Book, published in October 1971. The book-length essay first appeared in February 1971, in two consecutive issues of The New Yorker magazine. +In the ensuing controversy, Welles was defended by colleagues, critics, biographers and scholars, but his reputation was damaged by its charges. The essay's thesis was later questioned and some of Kael's findings were also contested in later years. + +Questions of authorship continued to come into sharper focus with Carringer's 1978 thoroughly researched essay, "The Scripts of Citizen Kane". Carringer studied the collection of script records—"almost a day-to-day record of the history of the scripting"—that was then still intact at RKO. He reviewed all seven drafts and concluded that "the full evidence reveals that Welles's contribution to the Citizen Kane script was not only substantial but definitive." + +Casting + +Citizen Kane was a rare film in that its principal roles were played by actors new to motion pictures. Ten were billed as Mercury Actors, members of the skilled repertory company assembled by Welles for the stage and radio performances of the Mercury Theatre, an independent theater company he founded with Houseman in 1937. "He loved to use the Mercury players," wrote biographer Charles Higham, "and consequently he launched several of them on movie careers." + +The film represents the feature film debuts of William Alland, Ray Collins, Joseph Cotten, Agnes Moorehead, Erskine Sanford, Everett Sloane, Paul Stewart, and Welles himself. Despite never having appeared in feature films, some of the cast members were already well known to the public. Cotten had recently become a Broadway star in the hit play The Philadelphia Story with Katharine Hepburn and Sloane was well known for his role on the radio show The Goldbergs. Mercury actor George Coulouris was a star of the stage in New York and London. + +Not all of the cast came from the Mercury Players. Welles cast Dorothy Comingore, an actress who played supporting parts in films since 1934 using the name "Linda Winters", as Susan Alexander Kane. A discovery of Charlie Chaplin, Comingore was recommended to Welles by Chaplin, who then met Comingore at a party in Los Angeles and immediately cast her. + +Welles had met stage actress Ruth Warrick while visiting New York on a break from Hollywood and remembered her as a good fit for Emily Norton Kane, later saying that she looked the part. Warrick told Carringer that she was struck by the extraordinary resemblance between herself and Welles's mother when she saw a photograph of Beatrice Ives Welles. She characterized her own personal relationship with Welles as motherly. + +"He trained us for films at the same time that he was training himself," recalled Agnes Moorehead. "Orson believed in good acting, and he realized that rehearsals were needed to get the most from his actors. That was something new in Hollywood: nobody seemed interested in bringing in a group to rehearse before scenes were shot. But Orson knew it was necessary, and we rehearsed every sequence before it was shot." + +When The March of Time narrator Westbrook Van Voorhis asked for $25,000 to narrate the News on the March sequence, Alland demonstrated his ability to imitate Van Voorhis and Welles cast him. + +Welles later said that casting character actor Gino Corrado in the small part of the waiter at the El Rancho broke his heart. Corrado had appeared in many Hollywood films, often as a waiter, and Welles wanted all of the actors to be new to films. + +Other uncredited roles went to Thomas A. Curran as Teddy Roosevelt in the faux newsreel; Richard Baer as Hillman, a man at Madison Square Garden, and a man in the News on the March screening room; and Alan Ladd, Arthur O'Connell and Louise Currie as reporters at Xanadu. + +Ruth Warrick (died 2005) was the last surviving member of the principal cast. Sonny Bupp (died 2007), who played Kane's young son, was the last surviving credited cast member. Kathryn Trosper Popper (died March 6, 2016) was reported to have been the last surviving actor to have appeared in Citizen Kane. Jean Forward (died September 2016), a soprano who dubbed the singing voice of Susan Alexander, was the last surviving performer from the film. + +Filming + +Production advisor Miriam Geiger quickly compiled a handmade film textbook for Welles, a practical reference book of film techniques that he studied carefully. He then taught himself filmmaking by matching its visual vocabulary to The Cabinet of Dr. Caligari, which he ordered from the Museum of Modern Art, and films by Frank Capra, René Clair, Fritz Lang, King Vidor and Jean Renoir. The one film he genuinely studied was John Ford's Stagecoach, which he watched 40 times. "As it turned out, the first day I ever walked onto a set was my first day as a director," Welles said. "I'd learned whatever I knew in the projection room—from Ford. After dinner every night for about a month, I'd run Stagecoach, often with some different technician or department head from the studio, and ask questions. 'How was this done?' 'Why was this done?' It was like going to school." + +Welles's cinematographer for the film was Gregg Toland, described by Welles as "just then, the number-one cameraman in the world." To Welles's astonishment, Toland visited him at his office and said, "I want you to use me on your picture." He had seen some of the Mercury stage productions (including Caesar) and said he wanted to work with someone who had never made a movie. RKO hired Toland on loan from Samuel Goldwyn Productions in the first week of June 1940. + +"And he never tried to impress us that he was doing any miracles," Welles recalled. "I was calling for things only a beginner would have been ignorant enough to think anybody could ever do, and there he was, doing them." Toland later explained that he wanted to work with Welles because he anticipated the first-time director's inexperience and reputation for audacious experimentation in the theater would allow the cinematographer to try new and innovative camera techniques that typical Hollywood films would never have allowed him to do. Unaware of filmmaking protocol, Welles adjusted the lights on set as he was accustomed to doing in the theater; Toland quietly re-balanced them, and was angry when one of the crew informed Welles that he was infringing on Toland's responsibilities. During the first few weeks of June, Welles had lengthy discussions about the film with Toland and art director Perry Ferguson in the morning, and in the afternoon and evening he worked with actors and revised the script. + +On June 29, 1940—a Saturday morning when few inquisitive studio executives would be around—Welles began filming Citizen Kane. After the disappointment of having Heart of Darkness canceled, Welles followed Ferguson's suggestion and deceived RKO into believing that he was simply shooting camera tests. "But we were shooting the picture," Welles said, "because we wanted to get started and be already into it before anybody knew about it." + +At the time RKO executives were pressuring him to agree to direct a film called The Men from Mars, to capitalize on "The War of the Worlds" radio broadcast. Welles said that he would consider making the project but wanted to make a different film first. At this time he did not inform them that he had already begun filming Citizen Kane. + +The early footage was called "Orson Welles Tests" on all paperwork. The first "test" shot was the News on the March projection room scene, economically filmed in a real studio projection room in darkness that masked many actors who appeared in other roles later in the film. "At $809 Orson did run substantially beyond the test budget of $528—to create one of the most famous scenes in movie history," wrote Barton Whaley. + +The next scenes were the El Rancho nightclub scenes and the scene in which Susan attempts suicide. Welles later said that the nightclub set was available after another film had wrapped and that filming took 10 to 12 days to complete. For these scenes Welles had Comingore's throat sprayed with chemicals to give her voice a harsh, raspy tone. Other scenes shot in secret included those in which Thompson interviews Leland and Bernstein, which were also shot on sets built for other films. + + +During production, the film was referred to as RKO 281. Most of the filming took place in what is now Stage 19 on the Paramount Pictures lot in Hollywood. There was some location filming at Balboa Park in San Diego and the San Diego Zoo. Photographs of German-Jewish investment banker Otto Hermann Kahn's real-life estate Oheka Castle were used to portray the fictional Xanadu. + +In the end of July, RKO approved the film and Welles was allowed to officially begin shooting, despite having already been filming "tests" for several weeks. Welles leaked stories to newspaper reporters that the "tests" had been so good that there was no need to re-shoot them. The first "official" scene to be shot was the breakfast montage sequence between Kane and his first wife Emily. To strategically save money and appease the RKO executives who opposed him, Welles rehearsed scenes extensively before actually shooting and filmed very few takes of each shot set-up. Welles never shot master shots for any scene after Toland told him that Ford never shot them. To appease the increasingly curious press, Welles threw a cocktail party for selected reporters, promising that they could watch a scene being filmed. When the journalists arrived Welles told them they had "just finished" shooting for the day but still had the party. Welles told the press that he was ahead of schedule (without factoring in the month of "test shooting"), thus discrediting claims that after a year in Hollywood without making a film he was a failure in the film industry. + + +Welles usually worked 16 to 18 hours a day on the film. He often began work at 4 a.m. since the special effects make-up used to age him for certain scenes took up to four hours to apply. Welles used this time to discuss the day's shooting with Toland and other crew members. The special contact lenses used to make Welles look elderly proved very painful, and a doctor was employed to place them into Welles's eyes. Welles had difficulty seeing clearly while wearing them, which caused him to badly cut his wrist when shooting the scene in which Kane breaks up the furniture in Susan's bedroom. While shooting the scene in which Kane shouts at Gettys on the stairs of Susan Alexander's apartment building, Welles fell ten feet; an X-ray revealed two bone chips in his ankle. + +The injury required him to direct the film from a wheelchair for two weeks. He eventually wore a steel brace to resume performing on camera; it is visible in the low-angle scene between Kane and Leland after Kane loses the election. For the final scene, a stage at the Selznick studio was equipped with a working furnace, and multiple takes were required to show the sled being put into the fire and the word "Rosebud" consumed. Paul Stewart recalled that on the ninth take the Culver City Fire Department arrived in full gear because the furnace had grown so hot the flue caught fire. "Orson was delighted with the commotion", he said. + +When "Rosebud" was burned, Welles choreographed the scene while he had composer Bernard Herrmann's cue playing on the set. + +Unlike Schaefer, many members of RKO's board of governors did not like Welles or the control that his contract gave him. However such board members as Nelson Rockefeller and NBC chief David Sarnoff were sympathetic to Welles. Throughout production Welles had problems with these executives not respecting his contract's stipulation of non-interference and several spies arrived on set to report what they saw to the executives. When the executives would sometimes arrive on set unannounced the entire cast and crew would suddenly start playing softball until they left. Before official shooting began the executives intercepted all copies of the script and delayed their delivery to Welles. They had one copy sent to their office in New York, resulting in it being leaked to press. + +Principal shooting wrapped October 24. Welles then took several weeks away from the film for a lecture tour, during which he also scouted additional locations with Toland and Ferguson. Filming resumed November 15 with some re-shoots. Toland had to leave due to a commitment to shoot Howard Hughes' The Outlaw, but Toland's camera crew continued working on the film and Toland was replaced by RKO cinematographer Harry J. Wild. The final day of shooting on November 30 was Kane's death scene. Welles boasted that he only went 21 days over his official shooting schedule, without factoring in the month of "camera tests". According to RKO records, the film cost $839,727. Its estimated budget had been $723,800. + +Post-production +Citizen Kane was edited by Robert Wise and assistant editor Mark Robson. Both would become successful film directors. Wise was hired after Welles finished shooting the "camera tests" and began officially making the film. Wise said that Welles "had an older editor assigned to him for those tests and evidently he was not too happy and asked to have somebody else. I was roughly Orson's age and had several good credits." Wise and Robson began editing the film while it was still shooting and said that they "could tell certainly that we were getting something very special. It was outstanding film day in and day out." + +Welles gave Wise detailed instructions and was usually not present during the film's editing. The film was very well planned out and intentionally shot for such post-production techniques as slow dissolves. The lack of coverage made editing easy since Welles and Toland edited the film "in camera" by leaving few options of how it could be put together. Wise said the breakfast table sequence took weeks to edit and get the correct "timing" and "rhythm" for the whip pans and overlapping dialogue. The News on the March sequence was edited by RKO's newsreel division to give it authenticity. They used stock footage from Pathé News and the General Film Library. + +During post-production Welles and special effects artist Linwood G. Dunn experimented with an optical printer to improve certain scenes that Welles found unsatisfactory from the footage. Whereas Welles was often immediately pleased with Wise's work, he would require Dunn and post-production audio engineer James G. Stewart to re-do their work several times until he was satisfied. + +Welles hired Bernard Herrmann to compose the film's score. Where most Hollywood film scores were written quickly, in as few as two or three weeks after filming was completed, Herrmann was given 12 weeks to write the music. He had sufficient time to do his own orchestrations and conducting, and worked on the film reel by reel as it was shot and cut. He wrote complete musical pieces for some of the montages, and Welles edited many of the scenes to match their length. + +Style +Film scholars and historians view Citizen Kane as Welles's attempt to create a new style of filmmaking by studying various forms of it and combining them into one. However, Welles stated that his love for cinema began only when he started working on the film. When asked where he got the confidence as a first-time director to direct a film so radically different from contemporary cinema, he responded, "Ignorance, ignorance, sheer ignorance—you know there's no confidence to equal it. It's only when you know something about a profession, I think, that you're timid or careful." + +David Bordwell wrote that "The best way to understand Citizen Kane is to stop worshipping it as a triumph of technique." Bordwell argues that the film did not invent any of its famous techniques such as deep focus cinematography, shots of the ceilings, chiaroscuro lighting and temporal jump-cuts, and that many of these stylistics had been used in German Expressionist films of the 1920s, such as The Cabinet of Dr. Caligari. But Bordwell asserts that the film did put them all together for the first time and perfected the medium in one single film. In a 1948 interview, D. W. Griffith said, "I loved Citizen Kane and particularly loved the ideas he took from me." + +Arguments against the film's cinematic innovations were made as early as 1946 when French historian Georges Sadoul wrote, "The film is an encyclopedia of old techniques." He pointed out such examples as compositions that used both the foreground and the background in the films of Auguste and Louis Lumière, special effects used in the films of Georges Méliès, shots of the ceiling in Erich von Stroheim's Greed and newsreel montages in the films of Dziga Vertov. + +French film critic André Bazin defended the film, writing: "In this respect, the accusation of plagiarism could very well be extended to the film's use of panchromatic film or its exploitation of the properties of gelatinous silver halide." Bazin disagreed with Sadoul's comparison to Lumière's cinematography since Citizen Kane used more sophisticated lenses, but acknowledged that it had similarities to such previous works as The 49th Parallel and The Power and the Glory. Bazin stated that "even if Welles did not invent the cinematic devices employed in Citizen Kane, one should nevertheless credit him with the invention of their meaning." Bazin championed the techniques in the film for its depiction of heightened reality, but Bordwell believed that the film's use of special effects contradicted some of Bazin's theories. + +Storytelling techniques +Citizen Kane rejects the traditional linear, chronological narrative and tells Kane's story entirely in flashbacks using different points of view, many of them from Kane's aged and forgetful associates, the cinematic equivalent of the unreliable narrator in literature. Welles also dispenses with the idea of a single storyteller and uses multiple narrators to recount Kane's life, a technique not used previously in Hollywood films. Each narrator recounts a different part of Kane's life, with each story overlapping another. The film depicts Kane as an enigma, a complicated man who leaves viewers with more questions than answers as to his character, such as the newsreel footage where he is attacked for being both a communist and a fascist. + +The technique of flashbacks had been used in earlier films, notably The Power and the Glory (1933), but no film was as immersed in it as Citizen Kane. Thompson the reporter acts as a surrogate for the audience, questioning Kane's associates and piecing together his life. + +Films typically had an "omniscient perspective" at the time, which Marilyn Fabe says give the audience the "illusion that we are looking with impunity into a world which is unaware of our gaze". Citizen Kane also begins in that fashion until the News on the March sequence, after which we the audience see the film through the perspectives of others. The News on the March sequence gives an overview of Kane's entire life (and the film's entire story) at the beginning of the film, leaving the audience without the typical suspense of wondering how it will end. Instead, the film's repetitions of events compels the audience to analyze and wonder why Kane's life happened the way that it did, under the pretext of finding out what "Rosebud" means. The film then returns to the omniscient perspective in the final scene, when only the audience discovers what "Rosebud" is. + +Cinematography + +The most innovative technical aspect of Citizen Kane is the extended use of deep focus, where the foreground, background, and everything in between are all in sharp focus. Cinematographer Toland did this through his experimentation with lenses and lighting. Toland described the achievement in an article for Theatre Arts magazine, made possible by the sensitivity of modern speed film: + +New developments in the science of motion picture photography are not abundant at this advanced stage of the game but periodically one is perfected to make this a greater art. Of these I am in an excellent position to discuss what is termed "Pan-focus", as I have been active for two years in its development and used it for the first time in Citizen Kane. Through its use, it is possible to photograph action from a range of eighteen inches from the camera lens to over two hundred feet away, with extreme foreground and background figures and action both recorded in sharp relief. Hitherto, the camera had to be focused either for a close or a distant shot, all efforts to encompass both at the same time resulting in one or the other being out of focus. This handicap necessitated the breaking up of a scene into long and short angles, with much consequent loss of realism. With pan-focus, the camera, like the human eye, sees an entire panorama at once, with everything clear and lifelike. + +Another unorthodox method used in the film was the low-angle shots facing upwards, thus allowing ceilings to be shown in the background of several scenes. Every set was built with a ceiling which broke with studio convention, and many were constructed of fabric that concealed microphones. Welles felt that the camera should show what the eye sees, and that it was a bad theatrical convention to pretend that there was no ceiling—"a big lie in order to get all those terrible lights up there," he said. He became fascinated with the look of low angles, which made even dull interiors look interesting. One extremely low angle is used to photograph the encounter between Kane and Leland after Kane loses the election. A hole was dug for the camera, which required drilling into the concrete floor. + +Welles credited Toland on the same title card as himself. "It's impossible to say how much I owe to Gregg," he said. "He was superb." He called Toland "the best director of photography that ever existed." + +Sound +Citizen Kanes sound was recorded by Bailey Fesler and re-recorded in post-production by audio engineer James G. Stewart, both of whom had worked in radio. Stewart said that Hollywood films never deviated from a basic pattern of how sound could be recorded or used, but with Welles "deviation from the pattern was possible because he demanded it." Although the film is known for its complex soundtrack, much of the audio is heard as it was recorded by Fesler and without manipulation. + +Welles used techniques from radio like overlapping dialogue. The scene in which characters sing "Oh, Mr. Kane" was especially complicated and required mixing several soundtracks together. He also used different "sound perspectives" to create the illusion of distances, such as in scenes at Xanadu where characters speak to each other at far distances. Welles experimented with sound in post-production, creating audio montages, and chose to create all of the sound effects for the film instead of using RKO's library of sound effects. + +Welles used an aural technique from radio called the "lightning-mix". Welles used this technique to link complex montage sequences via a series of related sounds or phrases. For example, Kane grows from a child into a young man in just two shots. As Thatcher hands eight-year-old Kane a sled and wishes him a Merry Christmas, the sequence suddenly jumps to a shot of Thatcher fifteen years later, completing the sentence he began in both the previous shot and the chronological past. Other radio techniques include using a number of voices, each saying a sentence or sometimes merely a fragment of a sentence, and splicing the dialogue together in quick succession, such as the projection room scene. The film's sound cost $16,996, but was originally budgeted at $7,288. + +Film critic and director François Truffaut wrote that "Before Kane, nobody in Hollywood knew how to set music properly in movies. Kane was the first, in fact the only, great film that uses radio techniques. ... A lot of filmmakers know enough to follow Auguste Renoir's advice to fill the eyes with images at all costs, but only Orson Welles understood that the sound track had to be filled in the same way." Cedric Belfrage of The Clipper wrote "of all of the delectable flavours that linger on the palate after seeing Kane, the use of sound is the strongest." + +Make-up +The make-up for Citizen Kane was created and applied by Maurice Seiderman (1907–1989), a junior member of the RKO make-up department. He had not been accepted into the union, which recognized him as only an apprentice, but RKO nevertheless used him to make up principal actors. "Apprentices were not supposed to make up any principals, only extras, and an apprentice could not be on a set without a journeyman present," wrote make-up artist Dick Smith, who became friends with Seiderman in 1979. "During his years at RKO I suspect these rules were probably overlooked often." "Seiderman had gained a reputation as one of the most inventive and creatively precise up-and-coming makeup men in Hollywood," wrote biographer Frank Brady. + +On an early tour of RKO, Welles met Seiderman in the small make-up lab that he created for himself in an unused dressing room. "Welles fastened on to him at once," wrote biographer Charles Higham, as Seiderman had developed his own makeup methods "that ensured complete naturalness of expression—a naturalness unrivaled in Hollywood." Seiderman developed a thorough plan for aging the principal characters, first making a plaster cast of the face of each of the actors who aged. He made a plaster mold of Welles's body down to the hips. + +"My sculptural techniques for the characters' aging were handled by adding pieces of white modeling clay, which matched the plaster, onto the surface of each bust," Seiderman told Norman Gambill. When Seiderman achieved the desired effect, he cast the clay pieces in a soft plastic material that he formulated himself. These appliances were then placed onto the plaster bust and a four-piece mold was made for each phase of aging. The castings were then fully painted and paired with the appropriate wig for evaluation. + +Before the actors went before the cameras each day, the pliable pieces were applied directly to their faces to recreate Seiderman's sculptural image. The facial surface was underpainted in a flexible red plastic compound; The red ground resulted in a warmth of tone that was picked up by the panchromatic film. Over that was applied liquid grease paint, and finally a colorless translucent talcum. Seiderman created the effect of skin pores on Kane's face by stippling the surface with a negative cast made from an orange peel. + +Welles often arrived on the set at 2:30 am, as application of the sculptural make-up took 3½ hours for the oldest incarnation of Kane. The make-up included appliances to age Welles's shoulders, breast, and stomach. "In the film and production photographs, you can see that Kane had a belly that overhung," Seiderman said. "That was not a costume, it was the rubber sculpture that created the image. You could see how Kane's silk shirt clung wetly to the character's body. It could not have been done any other way." + +Seiderman worked with Charles Wright on the wigs. These went over a flexible skull cover that Seiderman created and sewed into place with elastic thread. When he found the wigs too full, he untied one hair at a time to alter their shape. Kane's mustache was inserted into the makeup surface a few hairs at a time, to realistically vary the color and texture. He also made scleral lenses for Welles, Dorothy Comingore, George Coulouris, and Everett Sloane to dull the brightness of their young eyes. The lenses took a long time to fit properly, and Seiderman began work on them before devising any of the other makeup. "I painted them to age in phases, ending with the blood vessels and the arcus senilis of old age." Seiderman's tour de force was the breakfast montage, shot all in one day. "Twelve years, two years shot at each scene," he said. + +The major studios gave screen credit for make-up only to the department head. When RKO make-up department head Mel Berns refused to share credit with Seiderman, who was only an apprentice, Welles told Berns that there would be no make-up credit. Welles signed a large advertisement in the Los Angeles newspaper: + +THANKS TO EVERYBODY WHO GETS SCREEN CREDIT FOR "CITIZEN KANE"AND THANKS TO THOSE WHO DON'TTO ALL THE ACTORS, THE CREW, THE OFFICE, THE MUSICIANS, EVERYBODYAND PARTICULARLY TO MAURICE SEIDERMAN, THE BEST MAKE-UP MAN IN THE WORLD + +Sets +Although credited as an assistant, the film's art direction was done by Perry Ferguson. Welles and Ferguson got along during their collaboration. In the weeks before production began Welles, Toland and Ferguson met regularly to discuss the film and plan every shot, set design and prop. Ferguson would take notes during these discussions and create rough designs of the sets and story boards for individual shots. After Welles approved the rough sketches, Ferguson made miniature models for Welles and Toland to experiment on with a periscope in order to rehearse and perfect each shot. Ferguson then had detailed drawings made for the set design, including the film's lighting design. The set design was an integral part of the film's overall look and Toland's cinematography. + +In the original script the Great Hall at Xanadu was modeled after the Great Hall in Hearst Castle and its design included a mixture of Renaissance and Gothic styles. "The Hearstian element is brought out in the almost perverse juxtaposition of incongruous architectural styles and motifs," wrote Carringer. Before RKO cut the film's budget, Ferguson's designs were more elaborate and resembled the production designs of early Cecil B. DeMille films and Intolerance. The budget cuts reduced Ferguson's budget by 33 percent and his work cost $58,775 total, which was below average at that time. + +To save costs Ferguson and Welles re-wrote scenes in Xanadu's living room and transported them to the Great Hall. A large staircase from another film was found and used at no additional cost. When asked about the limited budget, Ferguson said "Very often—as in that much-discussed 'Xanadu' set in Citizen Kane—we can make a foreground piece, a background piece, and imaginative lighting suggests a great deal more on the screen than actually exists on the stage." According to the film's official budget there were 81 sets built, but Ferguson said there were between 106 and 116. + +Still photographs of Oheka Castle in Huntington, New York, were used in the opening montage, representing Kane's Xanadu estate. Ferguson also designed statues from Kane's collection with styles ranging from Greek to German Gothic. The sets were also built to accommodate Toland's camera movements. Walls were built to fold and furniture could quickly be moved. The film's famous ceilings were made out of muslin fabric and camera boxes were built into the floors for low angle shots. Welles later said that he was proud that the film production value looked much more expensive than the film's budget. Although neither worked with Welles again, Toland and Ferguson collaborated in several films in the 1940s. + +Special effects +The film's special effects were supervised by RKO department head Vernon L. Walker. Welles pioneered several visual effects to cheaply shoot things like crowd scenes and large interior spaces. For example, the scene in which the camera in the opera house rises dramatically to the rafters, to show the workmen showing a lack of appreciation for Susan Alexander Kane's performance, was shot by a camera craning upwards over the performance scene, then a curtain wipe to a miniature of the upper regions of the house, and then another curtain wipe matching it again with the scene of the workmen. Other scenes effectively employed miniatures to make the film look much more expensive than it truly was, such as various shots of Xanadu. + +Some shots included rear screen projection in the background, such as Thompson's interview of Leland and some of the ocean backgrounds at Xanadu. Bordwell claims that the scene where Thatcher agrees to be Kane's guardian used rear screen projection to depict young Kane in the background, despite this scene being cited as a prime example of Toland's deep focus cinematography. A special effects camera crew from Walker's department was required for the extreme close-up shots such as Kane's lips when he says "Rosebud" and the shot of the typewriter typing Susan's bad review. + +Optical effects artist Dunn claimed that "up to 80 percent of some reels was optically printed." These shots were traditionally attributed to Toland for years. The optical printer improved some of the deep focus shots. One problem with the optical printer was that it sometimes created excessive graininess, such as the optical zoom out of the snow globe. Welles decided to superimpose snow falling to mask the graininess in these shots. Toland said that he disliked the results of the optical printer, but acknowledged that "RKO special effects expert Vernon Walker, ASC, and his staff handled their part of the production—a by no means inconsiderable assignment—with ability and fine understanding." + +Any time deep focus was impossible—as in the scene in which Kane finishes a negative review of Susan's opera while at the same time firing the person who began writing the review—an optical printer was used to make the whole screen appear in focus, visually layering one piece of film onto another. However, some apparently deep-focus shots were the result of in-camera effects, as in the famous scene in which Kane breaks into Susan's room after her suicide attempt. In the background, Kane and another man break into the room, while simultaneously the medicine bottle and a glass with a spoon in it are in closeup in the foreground. The shot was an in-camera matte shot. The foreground was shot first, with the background dark. Then the background was lit, the foreground darkened, the film rewound, and the scene re-shot with the background action. + +Music + +The film's music was composed by Bernard Herrmann. Herrmann had composed for Welles for his Mercury Theatre radio broadcasts. Because it was Herrmann's first motion picture score, RKO wanted to pay him only a small fee, but Welles insisted he be paid at the same rate as Max Steiner. + +The score established Herrmann as an important new composer of film soundtracks and eschewed the typical Hollywood practice of scoring a film with virtually non-stop music. Instead Herrmann used what he later described as "radio scoring", musical cues typically 5–15 seconds in length that bridge the action or suggest a different emotional response. The breakfast montage sequence begins with a graceful waltz theme and gets darker with each variation on that theme as the passage of time leads to the hardening of Kane's personality and the breakdown of his first marriage. + +Herrmann realized that musicians slated to play his music were hired for individual unique sessions; there was no need to write for existing ensembles. This meant that he was free to score for unusual combinations of instruments, even instruments that are not commonly heard. In the opening sequence, for example, the tour of Kane's estate Xanadu, Herrmann introduces a recurring leitmotif played by low woodwinds, including a quartet of alto flutes. + +For Susan Alexander Kane's operatic sequence, Welles suggested that Herrmann compose a witty parody of a Mary Garden vehicle, an aria from Salammbô. "Our problem was to create something that would give the audience the feeling of the quicksand into which this simple little girl, having a charming but small voice, is suddenly thrown," Herrmann said. Writing in the style of a 19th-century French Oriental opera, Herrmann put the aria in a key that would force the singer to strain to reach the high notes, culminating in a high D, well outside the range of Susan Alexander. Soprano Jean Forward dubbed the vocal part for Comingore. Houseman claimed to have written the libretto, based on Jean Racine's Athalie and Phedre, although some confusion remains since Lucille Fletcher remembered preparing the lyrics. Fletcher, then Herrmann's wife, wrote the libretto for his opera Wuthering Heights. + +Music enthusiasts consider the scene in which Susan Alexander Kane attempts to sing the famous cavatina "Una voce poco fa" from Il barbiere di Siviglia by Gioachino Rossini with vocal coach Signor Matiste as especially memorable for depicting the horrors of learning music through mistakes. + +In 1972, Herrmann said, "I was fortunate to start my career with a film like Citizen Kane, it's been a downhill run ever since!" Welles loved Herrmann's score and told director Henry Jaglom that it was 50 percent responsible for the film's artistic success. + +Some incidental music came from other sources. Welles heard the tune used for the publisher's theme, "Oh, Mr. Kane", in Mexico. Called "A Poco No", the song was written by Pepe Guízar and special lyrics were written by Herman Ruby. + +"In a Mizz", a 1939 jazz song by Charlie Barnet and Haven Johnson, bookends Thompson's second interview of Susan Alexander Kane. "I kind of based the whole scene around that song," Welles said. "The music is by Nat Cole—it's his trio." Later—beginning with the lyrics, "It can't be love"—"In a Mizz" is performed at the Everglades picnic, framing the fight in the tent between Susan and Kane. Musicians including bandleader Cee Pee Johnson (drums), Alton Redd (vocals), Raymond Tate (trumpet), Buddy Collette (alto sax) and Buddy Banks (tenor sax) are featured. + +All of the music used in the newsreel came from the RKO music library, edited at Welles's request by the newsreel department to achieve what Herrmann called "their own crazy way of cutting". The News on the March theme that accompanies the newsreel titles is "Belgian March" by Anthony Collins, from the film Nurse Edith Cavell. Other examples are an excerpt from Alfred Newman's score for Gunga Din (the exploration of Xanadu), Roy Webb's theme for the film Reno (the growth of Kane's empire), and bits of Webb's score for Five Came Back (introducing Walter Parks Thatcher). + +Editing + +One of the editing techniques used in Citizen Kane was the use of montage to collapse time and space, using an episodic sequence on the same set while the characters changed costume and make-up between cuts so that the scene following each cut would look as if it took place in the same location, but at a time long after the previous cut. In the breakfast montage, Welles chronicles the breakdown of Kane's first marriage in five vignettes that condense 16 years of story time into two minutes of screen time. Welles said that the idea for the breakfast scene "was stolen from The Long Christmas Dinner by Thornton Wilder ... a one-act play, which is a long Christmas dinner that takes you through something like 60 years of a family's life." The film often uses long dissolves to signify the passage of time and its psychological effect of the characters, such as the scene in which the abandoned sled is covered with snow after the young Kane is sent away with Thatcher. + +Welles was influenced by the editing theories of Sergei Eisenstein by using jarring cuts that caused "sudden graphic or associative contrasts", such as the cut from Kane's deathbed to the beginning of the News on the March sequence and a sudden shot of a shrieking cockatoo at the beginning of Raymond's flashback. Although the film typically favors mise-en-scène over montage, the scene in which Kane goes to Susan Alexander's apartment after first meeting her is the only one that is primarily cut as close-ups with shots and counter shots between Kane and Susan. Fabe says that "by using a standard Hollywood technique sparingly, [Welles] revitalizes its psychological expressiveness." + +Sources + +Welles never confirmed a principal source for the character of Charles Foster Kane. Houseman wrote that Kane is a synthesis of different personalities, with Hearst's life used as the main source. Some events and details were invented, and Houseman wrote that he and Mankiewicz also "grafted anecdotes from other giants of journalism, including Pulitzer, Northcliffe and Mank's first boss, Herbert Bayard Swope." Welles said, "Mr. Hearst was quite a bit like Kane, although Kane isn't really founded on Hearst in particular. Many people sat for it, so to speak". He specifically acknowledged that aspects of Kane were drawn from the lives of two business tycoons familiar from his youth in Chicago—Samuel Insull and Harold Fowler McCormick. + +The character of Jedediah Leland was based on drama critic Ashton Stevens, George Stevens's uncle and Welles's close boyhood friend. Some detail came from Mankiewicz's own experience as a drama critic in New York. + +Many assumed that the character of Susan Alexander Kane was based on Marion Davies, Hearst's mistress whose career he managed and whom Hearst promoted as a motion picture actress. This assumption was a major reason Hearst tried to destroy Citizen Kane. Welles denied that the character was based on Davies, whom he called "an extraordinary woman—nothing like the character Dorothy Comingore played in the movie." He cited Insull's building of the Chicago Opera House, and McCormick's lavish promotion of the opera career of his second wife, Ganna Walska, as direct influences on the screenplay. + +The character of political boss Jim W. Gettys is based on Charles F. Murphy, a leader in New York City's infamous Tammany Hall political machine. + +Welles credited "Rosebud" to Mankiewicz. Biographer Richard Meryman wrote that the symbol of Mankiewicz's own damaged childhood was a treasured bicycle, stolen while he visited the public library and not replaced by his family as punishment. He regarded it as the prototype of Charles Foster Kane's sled. In his 2015 Welles biography, Patrick McGilligan reported that Mankiewicz himself stated that the word "Rosebud" was taken from the name of a famous racehorse, Old Rosebud. Mankiewicz had a bet on the horse in the 1914 Kentucky Derby, which he won, and McGilligan wrote that "Old Rosebud symbolized his lost youth, and the break with his family". In testimony for the Lundberg suit, Mankiewicz said, "I had undergone psycho-analysis, and Rosebud, under circumstances slightly resembling the circumstances in [Citizen Kane], played a prominent part." Gore Vidal has argued in the New York Review of Books that “Rosebud was what Hearst called his friend Marion Davies’s clitoris”. + +The News on the March sequence that begins the film satirizes the journalistic style of The March of Time, the news documentary and dramatization series presented in movie theaters by Time Inc. From 1935 to 1938 Welles was a member of the uncredited company of actors that presented the original radio version. + +Houseman claimed that banker Walter P. Thatcher was loosely based on J. P. Morgan. Bernstein was named for Dr. Maurice Bernstein, appointed Welles's guardian; Sloane's portrayal was said to be based on Bernard Herrmann. Herbert Carter, editor of The Inquirer, was named for actor Jack Carter. + +Political themes +Laura Mulvey explored the anti-fascist themes of Citizen Kane in her 1992 monograph for the British Film Institute. The News on the March newsreel presents Kane keeping company with Hitler and other dictators while he smugly assures the public that there will be no war. She wrote that the film reflects "the battle between intervention and isolationism" then being waged in the United States; the film was released six months before the attack on Pearl Harbor, while President Franklin D. Roosevelt was laboring to win public opinion for entering World War II. "In the rhetoric of Citizen Kane," Mulvey writes, "the destiny of isolationism is realised in metaphor: in Kane's own fate, dying wealthy and lonely, surrounded by the detritus of European culture and history." + +Journalist Ignacio Ramonet has cited the film as an early example of mass media manipulation of public opinion and the power that media conglomerates have on influencing the democratic process. He believes that this early example of a media mogul influencing politics is outdated and that today "there are media groups with the power of a thousand Citizen Kanes." Media mogul Rupert Murdoch is sometimes labeled as a latter-day Citizen Kane. + +Comparisons have also been made between the career and character of Donald Trump and Charles Foster Kane. Citizen Kane is reported to be one of Trump's favorite films, and his biographer Tim O’Brien has said that Trump is fascinated by and identifies with Kane. In an interview with filmmaker Errol Morris, Trump explained his own interpretation of the film's themes, saying "You learn in 'Kane' maybe wealth isn't everything, because he had the wealth but he didn't have the happiness. In real life I believe that wealth does in fact isolate you from other people. It's a protective mechanism — you have your guard up much more so [than] if you didn't have wealth...Perhaps I can understand that." + +Pre-release controversy +To ensure that Hearst's life's influence on Citizen Kane was a secret, Welles limited access to dailies and managed the film's publicity. A December 1940 feature story in Stage magazine compared the film's narrative to Faust and made no mention of Hearst. + +The film was scheduled to premiere at RKO's flagship theater Radio City Music Hall on February 14, but in early January 1941 Welles was not finished with post-production work and told RKO that it still needed its musical score. Writers for national magazines had early deadlines and so a rough cut was previewed for a select few on January 3, 1941 for such magazines as Life, Look and Redbook. Gossip columnist Hedda Hopper (an arch-rival of Louella Parsons, the Hollywood correspondent for Hearst papers) showed up to the screening uninvited. Most of the critics at the preview said that they liked the film and gave it good advanced reviews. Hopper wrote negatively about it, calling the film a "vicious and irresponsible attack on a great man" and criticizing its corny writing and old fashioned photography. + +Friday magazine ran an article drawing point-by-point comparisons between Kane and Hearst and documented how Welles had led on Parsons. Up until this Welles had been friendly with Parsons. The magazine quoted Welles as saying that he could not understand why she was so nice to him and that she should "wait until the woman finds out that the picture's about her boss." Welles immediately denied making the statement and the editor of Friday admitted that it might be false. Welles apologized to Parsons and assured her that he had never made that remark. + +Shortly after Fridays article, Hearst sent Parsons an angry letter complaining that he had learned about Citizen Kane from Hopper and not her. The incident made a fool of Parsons and compelled her to start attacking Welles and the film. Parsons demanded a private screening of the film and personally threatened Schaefer on Hearst's behalf, first with a lawsuit and then with a vague threat of consequences for everyone in Hollywood. On January 10 Parsons and two lawyers working for Hearst were given a private screening of the film. James G. Stewart was present at the screening and said that she walked out of the film. + +Soon after, Parsons called Schaefer and threatened RKO with a lawsuit if they released Kane. She also contacted the management of Radio City Music Hall and demanded that they should not screen it. The next day, the front page headline in Daily Variety read, "HEARST BANS RKO FROM PAPERS." Hearst began this ban by suppressing promotion of RKO's Kitty Foyle, but in two weeks the ban was lifted for everything except Kane. + +When Schaefer did not submit to Parsons she called other studio heads and made more threats on behalf of Hearst to expose the private lives of people throughout the entire film industry. Welles was threatened with an exposé about his romance with the married actress Dolores del Río, who wanted the affair kept secret until her divorce was finalized. In a statement to journalists Welles denied that the film was about Hearst. Hearst began preparing an injunction against the film for libel and invasion of privacy, but Welles's lawyer told him that he doubted Hearst would proceed due to the negative publicity and required testimony that an injunction would bring. + +The Hollywood Reporter ran a front-page story on January 13 that Hearst papers were about to run a series of editorials attacking Hollywood's practice of hiring refugees and immigrants for jobs that could be done by Americans. The goal was to put pressure on the other studios to force RKO to shelve Kane. Many of those immigrants had fled Europe after the rise of fascism and feared losing the haven of the United States. Soon afterwards, Schaefer was approached by Nicholas Schenck, head of Metro-Goldwyn-Mayer's parent company, with an offer on the behalf of Louis B. Mayer and other Hollywood executives to RKO Pictures of $805,000 to destroy all prints of the film and burn the negative. + +Once RKO's legal team reassured Schaefer, the studio announced on January 21 that Kane would be released as scheduled, and with one of the largest promotional campaigns in the studio's history. Schaefer brought Welles to New York City for a private screening of the film with the New York corporate heads of the studios and their lawyers. There was no objection to its release provided that certain changes, including the removal or softening of specific references that might offend Hearst, were made. Welles agreed and cut the running time from 122 minutes to 119 minutes. The cuts satisfied the corporate lawyers. + +Release + +Radio City Music Hall's management refused to screen Citizen Kane for its premiere. A possible factor was Parsons's threat that The American Weekly would run a defamatory story on the grandfather of major RKO stockholder Nelson Rockefeller. Other exhibitors feared being sued for libel by Hearst and refused to show the film. In March Welles threatened the RKO board of governors with a lawsuit if they did not release the film. Schaefer stood by Welles and opposed the board of governors. When RKO still delayed the film's release Welles offered to buy the film for $1 million and the studio finally agreed to release the film on May 1. + +Schaefer managed to book a few theaters willing to show the film. Hearst papers refused to accept advertising. RKO's publicity advertisements for the film erroneously promoted it as a love story. + +Kane opened at the RKO Palace Theatre on Broadway in New York on May 1, 1941, in Chicago on May 6, and in Los Angeles on May 8. Welles said that at the Chicago premiere that he attended the theater was almost empty. + +The day after the New York release, The New York Times said "it comes close to being the most sensational film ever made in Hollywood". The Washington Post called it "one of the most important films in the history" of filmmaking. The Washington Evening Star said Welles was a genius who created "a superbly dramatic biography of another genius" and "a picture that is revolutionary". The Chicago Tribune called the film interesting and different but "its sacrifice of simplicity to eccentricity robs it of distinction and general entertainment value". The Los Angeles Times gave the film a mixed review, saying it was brilliant and skillful at times with an ending that "rather fizzled". + +The film did well in cities and larger towns, but it fared poorly in more remote areas. RKO still had problems getting exhibitors to show the film. For example, one chain controlling more than 500 theaters got Welles's film as part of a package but refused to play it, reportedly out of fear of Hearst. Hearst's disruption of the film's release damaged its box office performance and, as a result, it lost $160,000 during its initial run. The film earned $23,878 during its first week in New York. By the ninth week it only made $7,279. Overall it lost money in New York, Boston, Chicago, Los Angeles, San Francisco and Washington, D.C., but made a profit in Seattle. + +Trailer + +Written and directed by Welles at Toland's suggestion, the theatrical trailer for Citizen Kane differs from other trailers in that it did not feature a single second of footage of the actual film itself, but acts as a wholly original, tongue-in-cheek, pseudo-documentary piece on the film's production. Filmed at the same time as Citizen Kane itself, it offers the only existing behind-the-scenes footage of the film. The trailer, shot by Wild instead of Toland, follows an unseen Welles as he provides narration for a tour around the film set, introductions to the film's core cast members, and a brief overview of Kane's character. The trailer also contains a number of trick shots, including one of Everett Sloane appearing at first to be running into the camera, which turns out to be the reflection of the camera in a mirror. + +At the time, it was almost unprecedented for a film trailer to not actually feature anything of the film itself; and while Citizen Kane is frequently cited as a groundbreaking, influential film, Simon Callow argues its trailer was no less original in its approach. Callow writes that it has "great playful charm ... it is a miniature documentary, almost an introduction to the cinema ... Teasing, charming, completely original, it is a sort of conjuring trick: Without his face appearing once on the screen, Welles entirely dominates its five [sic] minutes' duration." + +Hearst's response +Hearing about Citizen Kane enraged Hearst so much that he banned any advertising, reviewing, or mentioning of it in his papers, and had his journalists libel Welles. Welles used Hearst's opposition as a pretext for previewing the film in several opinion-making screenings in Los Angeles, lobbying for its artistic worth against the hostile campaign that Hearst was waging. A special press screening took place in early March. Henry Luce was in attendance and reportedly wanted to buy the film from RKO for $1 million to distribute it himself. The reviews for this screening were positive. A Hollywood Review headline read, "Mr. Genius Comes Through; 'Kane' Astonishing Picture". The Motion Picture Herald reported about the screening and Hearst's intention to sue RKO. Time magazine wrote that "The objection of Mr. Hearst, who founded a publishing empire on sensationalism, is ironic. For to most of the several hundred people who have seen the film at private screenings, Citizen Kane is the most sensational product of the U.S. movie industry." A second press screening occurred in April. + +When Schaefer rejected Hearst's offer to suppress the film, Hearst banned every newspaper and station in his media conglomerate from reviewing—or even mentioning—the film. He also had many movie theaters ban it, and many did not show it through fear of being socially exposed by his massive newspaper empire. The Oscar-nominated documentary The Battle Over Citizen Kane lays the blame for the film's relative failure squarely at the feet of Hearst. The film did decent business at the box office; it went on to be the sixth highest grossing film in its year of release, a modest success its backers found acceptable. Nevertheless, the film's commercial performance fell short of its creators' expectations. Hearst's biographer David Nasaw points out that Hearst's actions were not the only reason Kane failed, however: the innovations Welles made with narrative, as well as the dark message at the heart of the film (that the pursuit of success is ultimately futile) meant that a popular audience could not appreciate its merits. + +Hearst's attacks against Welles went beyond attempting to suppress the film. Welles said that while he was on his post-filming lecture tour a police detective approached him at a restaurant and advised him not to go back to his hotel. A 14-year-old girl had reportedly been hidden in the closet of his room, and two photographers were waiting for him to walk in. Knowing he would be jailed after the resulting publicity, Welles did not return to the hotel but waited until the train left town the following morning. "But that wasn't Hearst," Welles said, "that was a hatchet man from the local Hearst paper who thought he would advance himself by doing it." + +In March 1941, Welles directed a Broadway version of Richard Wright's Native Son (and, for luck, used a "Rosebud" sled as a prop). Native Son received positive reviews, but Hearst-owned papers used the opportunity to attack Welles as a communist. The Hearst papers vociferously attacked Welles after his April 1941 radio play, "His Honor, the Mayor", produced for The Free Company radio series on CBS. + +Welles described his chance encounter with Hearst in an elevator at the Fairmont Hotel on the night Citizen Kane opened in San Francisco. Hearst and Welles's father were acquaintances, so Welles introduced himself and asked Hearst if he would like to come to the opening. Hearst did not respond. "As he was getting off at his floor, I said, 'Charles Foster Kane would have accepted.' No reply", recalled Welles. "And Kane would have, you know. That was his style—just as he finished Jed Leland's bad review of Susan as an opera singer." + +In 1945, Hearst journalist Robert Shaw wrote that the film got "a full tide of insensate fury" from Hearst papers, "then it ebbed suddenly. With one brain cell working, the chief realized that such hysterical barking by the trained seals would attract too much attention to the picture. But to this day the name of Orson Welles is on the official son-of-a-bitch list of every Hearst newspaper". + +Despite Hearst's attempts to destroy the film, since 1941 references to his life and career have usually included a reference to Citizen Kane, such as the headline 'Son of Citizen Kane Dies' for the obituary of Hearst's son. In 2012, the Hearst estate agreed to screen the film at Hearst Castle in San Simeon, breaking Hearst's ban on the film. + +Contemporary responses +Citizen Kane received acclaim from several critics. New York Daily News critic Kate Cameron called it "one of the most interesting and technically superior films that has ever come out of a Hollywood studio". New York World-Telegram critic William Boehnel said that the film was "staggering and belongs at once among the greatest screen achievements". Time magazine wrote that "it has found important new techniques in picture-making and story-telling." Life magazine's review said that "few movies have ever come from Hollywood with such powerful narrative, such original technique, such exciting photography." John C. Mosher of The New Yorker called the film's style "like fresh air" and raved "Something new has come to the movie world at last." Anthony Bower of The Nation called it "brilliant" and praised the cinematography and performances by Welles, Comingore and Cotten. John O'Hara's Newsweek review called it the best picture he'd ever seen and said Welles was "the best actor in the history of acting." Welles called O'Hara's review "the greatest review that anybody ever had." + +The day following the premiere of Citizen Kane, The New York Times critic Bosley Crowther wrote that "... it comes close to being the most sensational film ever made in Hollywood." + +Count on Mr. Welles: he doesn't do things by halves. ... Upon the screen he discovered an area large enough for his expansive whims to have free play. And the consequence is that he has made a picture of tremendous and overpowering scope, not in physical extent so much as in its rapid and graphic rotation of thoughts. Mr. Welles has put upon the screen a motion picture that really moves. + +In the UK C. A. Lejeune of The Observer called it "The most exciting film that has come out of Hollywood in twenty-five years" and Dilys Powell of The Sunday Times said the film's style was made "with the ease and boldness and resource of one who controls and is not controlled by his medium." Edward Tangye Lean of Horizon praised the film's technical style, calling it "perhaps a decade ahead of its contemporaries." + +A few reviews were mixed. Otis Ferguson of The New Republic said it was "the boldest free-hand stroke in major screen production since Griffith and Bitzer were running wild to unshackle the camera", but also criticized its style, calling it a "retrogression in film technique" and stating that "it holds no great place" in film history. Ferguson reacted to some of the film's celebrated visual techniques by calling them "just willful dabbling" and "the old shell game." In a rare film review, filmmaker Erich von Stroheim criticized the film's story and non-linear structure, but praised the technical style and performances, and wrote "Whatever the truth may be about it, Citizen Kane is a great picture and will go down in screen history. More power to Welles!" + +Some prominent critics wrote negative reviews. In his 1941 review for Sur, Jorge Luis Borges famously called the film "a labyrinth with no center" and predicted that its legacy would be a film "whose historical value is undeniable but which no one cares to see again." The Argus Weekend Magazine critic Erle Cox called the film "amazing" but thought that Welles's break with Hollywood traditions was "overdone". Tatlers James Agate called it "the well-intentioned, muddled, amateurish thing one expects from high-brows" and "a quite good film which tries to run the psychological essay in harness with your detective thriller, and doesn't quite succeed." Eileen Creelman of The New York Sun called it "a cold picture, unemotional, a puzzle rather than a drama". Other people who disliked the film were W. H. Auden and James Agee. After watching the film on January 29, 1942 Kenneth Williams, then aged 15, writing in his first diary curtly described it as "boshey rot". + +Modern critics have given Citizen Kane an even more positive response. Review aggregation website Rotten Tomatoes reports that 99% of 125 critics gave the film a positive review, with an average rating of 9.70/10. The site's critical consensus reads: "Orson Welles's epic tale of a publishing tycoon's rise and fall is entertaining, poignant, and inventive in its storytelling, earning its reputation as a landmark achievement in film." In April 2021, it was noted that the addition of an 80-year-old negative review from the Chicago Tribune reduced the film's rating from 100% to 99% on the site; Citizen Kane held its 100% rating until early 2021. On Metacritic, however, the film still has a rare weighted average score of 100 out of 100 based on 19 critics, indicating "universal acclaim". + +Accolades + +It was widely believed the film would win most of its Academy Award nominations, but it received only the award for Best Original Screenplay. Variety reported that block voting by screen extras deprived Citizen Kane of Best Picture and Best Actor, and similar prejudices were likely to have been responsible for the film receiving no technical awards. + +Legacy +Citizen Kane was the only film made under Welles's original contract with RKO Pictures, which gave him complete creative control. Welles's new business manager and attorney permitted the contract to lapse. In July 1941, Welles reluctantly signed a new and less favorable deal with RKO under which he produced and directed The Magnificent Ambersons (1942), produced Journey into Fear (1943), and began It's All True, a film he agreed to do without payment. In the new contract Welles was an employee of the studio and lost the right to final cut, which later allowed RKO to modify and re-cut The Magnificent Ambersons over his objections. In June 1942, Schaefer resigned the presidency of RKO Pictures and Welles's contract was terminated by his successor. + +Release in Europe +During World War II, Citizen Kane was not seen in most European countries. It was shown in France for the first time on July 10, 1946, at the Marbeuf theater in Paris. Initially most French film critics were influenced by the negative reviews of Jean-Paul Sartre in 1945 and Georges Sadoul in 1946. At that time many French intellectuals and filmmakers shared Sartre's negative opinion that Hollywood filmmakers were uncultured. Sartre criticized the film's flashbacks for its nostalgic and romantic preoccupation with the past instead of the realities of the present and said that "the whole film is based on a misconception of what cinema is all about. The film is in the past tense, whereas we all know that cinema has got to be in the present tense." + +André Bazin, a then little-known film critic working for Sartre's Les Temps modernes, was asked to give an impromptu speech about the film after a screening at the Colisée Theatre in the autumn of 1946 and changed the opinion of much of the audience. This speech led to Bazin's 1947 article "The Technique of Citizen Kane", which directly influenced public opinion about the film. Carringer wrote that Bazin was "the one who did the most to enhance the film's reputation." Both Bazin's critique of the film and his theories about cinema itself centered around his strong belief in mise-en-scène. These theories were diametrically opposed to both the popular Soviet montage theory and the politically Marxist and anti-Hollywood beliefs of most French film critics at that time. Bazin believed that a film should depict reality without the filmmaker imposing their "will" on the spectator, which the Soviet theory supported. Bazin wrote that Citizen Kanes mise-en-scène created a "new conception of filmmaking" and that the freedom given to the audience from the deep focus shots was innovative by changing the entire concept of the cinematic image. Bazin wrote extensively about the mise-en-scène in the scene where Susan Alexander attempts suicide, which was one long take while other films would have used four or five shots in the scene. Bazin wrote that the film's mise-en-scène "forces the spectator to participate in the meaning of the film" and creates "a psychological realism which brings the spectator back to the real conditions of perception." + +In his 1950 essay "The Evolution of the Language of Cinema", Bazin placed Citizen Kane center stage as a work which ushered in a new period in cinema. One of the first critics to defend motion pictures as being on the same artistic level as literature or painting, Bazin often used the film as an example of cinema as an art form and wrote that "Welles has given the cinema a theoretical restoration. He has enriched his filmic repertory with new or forgotten effects that, in today's artistic context, take on a significance we didn't know they could have." Bazin also compared the film to Roberto Rossellini's Paisan for having "the same aesthetic concept of realism" and to the films of William Wyler shot by Toland (such as The Little Foxes and The Best Years of Our Lives), all of which used deep focus cinematography that Bazin called "a dialectical step forward in film language." + +Bazin's praise of the film went beyond film theory and reflected his own philosophy towards life itself. His metaphysical interpretations about the film reflected humankind's place in the universe. Bazin believed that the film examined one person's identity and search for meaning. It portrayed the world as ambiguous and full of contradictions, whereas films up until then simply portrayed people's actions and motivations. Bazin's biographer Dudley Andrew wrote that: + +The world of Citizen Kane, that mysterious, dark, and infinitely deep world of space and memory where voices trail off into distant echoes and where meaning dissolves into interpretation, seemed to Bazin to mark the starting point from which all of us try to construct provisionally the sense of our lives. + +Bazin went on to co-found Cahiers du cinéma, whose contributors (including future film directors François Truffaut and Jean-Luc Godard) also praised the film. The popularity of Truffaut's auteur theory helped the film's and Welles's reputation. + +Re-evaluation +By 1942 Citizen Kane had run its course theatrically and, apart from a few showings at big city arthouse cinemas, it largely vanished and both the film's and Welles's reputation fell among American critics. In 1949 critic Richard Griffith in his overview of cinema, The Film Till Now, dismissed Citizen Kane as "... tinpot if not crackpot Freud." + +In the United States, it was neglected and forgotten until its revival on television in the mid-to-late 1950s. Three key events in 1956 led to its re-evaluation in the United States: first, RKO was one of the first studios to sell its library to television, and early that year Citizen Kane started to appear on television; second, the film was re-released theatrically to coincide with Welles's return to the New York stage, where he played King Lear; and third, American film critic Andrew Sarris wrote "Citizen Kane: The American Baroque" for Film Culture, and described it as "the great American film" and "the work that influenced the cinema more profoundly than any American film since The Birth of a Nation." Carringer considers Sarris's essay as the most important influence on the film's reputation in the US. + +During Expo 58, a poll of over 100 film historians named Kane one of the top ten greatest films ever made (the group gave first-place honors to Battleship Potemkin). When a group of young film directors announced their vote for the top six, they were booed for not including the film. + +In the decades since, its critical status as one of the greatest films ever made has grown, with numerous essays and books on it including Peter Cowie's The Cinema of Orson Welles, Ronald Gottesman's Focus on Citizen Kane, a collection of significant reviews and background pieces, and most notably Kael's essay, "Raising Kane", which promoted the value of the film to a much wider audience than it had reached before. Despite its criticism of Welles, it further popularized the notion of Citizen Kane as the great American film. The rise of art house and film society circuits also aided in the film's rediscovery. David Thomson said that the film 'grows with every year as America comes to resemble it." + +The British magazine Sight & Sound has produced a Top Ten list surveying film critics every decade since 1952, and is regarded as one of the most respected barometers of critical taste. Citizen Kane was a runner up to the top 10 in its 1952 poll but was voted as the greatest film ever made in its 1962 poll, retaining the top spot in every subsequent poll until 2012, when Vertigo displaced it. + +The film has also ranked number one in the following film "best of" lists: Julio Castedo's The 100 Best Films of the Century, Cahiers du cinéma's 100 films pour une cinémathèque idéale, Kinovedcheskie Zapiski, Time Out magazine's Top 100 Films (Centenary), The Village Voices 100 Greatest Films, and The Royal Belgian Film Archive's Most Important and Misappreciated American Films. + +Roger Ebert called Citizen Kane the greatest film ever made: "But people don't always ask about the greatest film. They ask, 'What's your favorite movie?' Again, I always answer with Citizen Kane." + +In 1998 Time Out conducted a reader's poll and Citizen Kane was voted 3rd best film of all time. On February 18, 1999, the United States Postal Service honored Citizen Kane by including it in its Celebrate the Century series. The film was honored again in February 25, 2003, in a series of U.S. postage stamps marking the 75th anniversary of the Academy of Motion Picture Arts and Sciences. Art director Perry Ferguson represents the behind-the-scenes craftsmen of filmmaking in the series; he is depicted completing a sketch for Citizen Kane. + +Citizen Kane was ranked number one in the American Film Institute's polls of film industry artists and leaders in 1998 and 2007. "Rosebud" was chosen as the 17th most memorable movie quotation in a 2005 AFI poll. The film's score was one of 250 nominees for the top 25 film scores in American cinema in another 2005 AFI poll. In 2005 the film was included on Times All-Time 100 best movies list. + +In 2012, the Motion Picture Editors Guild published a list of the 75 best-edited films of all time based on a survey of its membership. Citizen Kane was listed second. In 2015, Citizen Kane ranked 1st on BBC's "100 Greatest American Films" list, voted on by film critics from around the world. + +Influence +Citizen Kane has been called the most influential film of all time. Richard Corliss has asserted that Jules Dassin's 1941 film The Tell-Tale Heart was the first example of its influence and the first pop culture reference to the film occurred later in 1941 when the spoof comedy Hellzapoppin' featured a "Rosebud" sled. The film's cinematography was almost immediately influential and in 1942 American Cinematographer wrote "without a doubt the most immediately noticeable trend in cinematography methods during the year was the trend toward crisper definition and increased depth of field." + +The cinematography influenced John Huston's The Maltese Falcon. Cinematographer Arthur Edeson used a wider-angle lens than Toland and the film includes many long takes, low angles and shots of the ceiling, but it did not use deep focus shots on large sets to the extent that Citizen Kane did. Edeson and Toland are often credited together for revolutionizing cinematography in 1941. Toland's cinematography influenced his own work on The Best Years of Our Lives. Other films influenced include Gaslight, Mildred Pierce and Jane Eyre. Cinematographer Kazuo Miyagawa said that his use of deep focus was influenced by "the camera work of Gregg Toland in Citizen Kane" and not by traditional Japanese art. + +Its cinematography, lighting, and flashback structure influenced such film noirs of the 1940s and 1950s as The Killers, Keeper of the Flame, Caught, The Great Man and This Gun for Hire. David Bordwell and Kristin Thompson have written that "For over a decade thereafter American films displayed exaggerated foregrounds and somber lighting, enhanced by long takes and exaggerated camera movements." However, by the 1960s filmmakers such as those from the French New Wave and Cinéma vérité movements favored "flatter, more shallow images with softer focus" and Citizen Kanes style became less fashionable. American filmmakers in the 1970s combined these two approaches by using long takes, rapid cutting, deep focus and telephoto shots all at once. Its use of long takes influenced films such as The Asphalt Jungle, and its use of deep focus cinematography influenced Gun Crazy, The Whip Hand, The Devil's General and Justice Is Done. The flashback structure in which different characters have conflicting versions of past events influenced La commare secca and Man of Marble. + +The film's structure influenced the biographical films Lawrence of Arabia and Mishima: A Life in Four Chapters—which begin with the subject's death and show their life in flashbacks—as well as Welles's thriller Mr. Arkadin. Rosenbaum sees similarities in the film's plot to Mr. Arkadin, as well as the theme of nostalgia for loss of innocence throughout Welles's career, beginning with Citizen Kane and including The Magnificent Ambersons, Mr. Arkadin and Chimes at Midnight. Rosenbaum also points out how the film influenced Warren Beatty's Reds. The film depicts the life of Jack Reed through the eyes of Louise Bryant, much as Kane's life is seen through the eyes of Thompson and the people who he interviews. Rosenbaum also compared the romantic montage between Reed and Bryant with the breakfast table montage in Citizen Kane. + +Akira Kurosawa's Rashomon is often compared to the film due to both having complicated plot structures told by multiple characters in the film. Welles said his initial idea for the film was "Basically, the idea Rashomon used later on," however Kurosawa had not yet seen the film before making Rashomon in 1950. Nigel Andrews has compared the film's complex plot structure to Rashomon, Last Year at Marienbad, Memento and Magnolia. Andrews also compares Charles Foster Kane to Michael Corleone in The Godfather, Jake LaMotta in Raging Bull and Daniel Plainview in There Will Be Blood for their portrayals of "haunted megalomaniac[s], presiding over the shards of [their] own [lives]." + +The films of Paul Thomas Anderson have been compared to it. Variety compared There Will Be Blood to the film and called it "one that rivals Giant and Citizen Kane in our popular lore as origin stories about how we came to be the people we are." The Master has been called "movieland's only spiritual sequel to Citizen Kane that doesn't shrivel under the hefty comparison". The Social Network has been compared to the film for its depiction of a media mogul and by the character Erica Albright being similar to "Rosebud". The controversy of the Sony hacking before the release of The Interview brought comparisons of Hearst's attempt to suppress the film. The film's plot structure and some specific shots influenced Todd Haynes's Velvet Goldmine. Abbas Kiarostami's The Traveler has been called "the Citizen Kane of the Iranian children's cinema." The film's use of overlapping dialogue has influenced the films of Robert Altman and Carol Reed. Reed's films Odd Man Out, The Third Man (in which Welles and Cotten appeared) and Outcast of the Islands were also influenced by the film's cinematography. + +Many directors have listed it as one of the greatest films ever made, including Woody Allen, Michael Apted, Les Blank, Kenneth Branagh, Paul Greengrass, Satyajit Ray, Michel Hazanavicius, Michael Mann, Sam Mendes, Jiří Menzel, Paul Schrader, Martin Scorsese, Denys Arcand, Gillian Armstrong, John Boorman, Roger Corman, Alex Cox, Miloš Forman, Norman Jewison, Richard Lester, Richard Linklater, Paul Mazursky, Ronald Neame, Sydney Pollack and Stanley Kubrick. Yasujirō Ozu said it was his favorite non-Japanese film and was impressed by its techniques. François Truffaut said that the film "has inspired more vocations to cinema throughout the world than any other" and recognized its influence in The Barefoot Contessa, Les Mauvaises Rencontres, Lola Montès, and 8 1/2. Truffaut's Day for Night pays tribute to the film in a dream sequence depicting a childhood memory of the character played by Truffaut stealing publicity photos from the film. Numerous film directors have cited the film as influential on their own films, including Theo Angelopoulos, Luc Besson, the Coen brothers, Francis Ford Coppola, Brian De Palma, John Frankenheimer, Stephen Frears, Sergio Leone, Michael Mann, Ridley Scott, Martin Scorsese, Bryan Singer and Steven Spielberg. Ingmar Bergman disliked the film and called it "a total bore. Above all, the performances are worthless. The amount of respect that movie has is absolutely unbelievable!" + +William Friedkin said that the film influenced him and called it "a veritable quarry for filmmakers, just as Joyce's Ulysses is a quarry for writers." The film has also influenced other art forms. Carlos Fuentes's novel The Death of Artemio Cruz was partially inspired by the film and the rock band The White Stripes paid unauthorized tribute to the film in the song "The Union Forever". + +Film memorabilia +In 1982, film director Steven Spielberg bought a "Rosebud" sled for $60,500; it was one of three balsa sleds used in the closing scenes and the only one that was not burned. Spielberg eventually donated the sled to the Academy Museum of Motion Pictures as he stated he felt it belonged in a museum. After the Spielberg purchase, it was reported that retiree Arthur Bauer claimed to own another "Rosebud" sled. In early 1942, when Bauer was 12, he had won an RKO publicity contest and selected the hardwood sled as his prize. In 1996, Bauer's estate offered the painted pine sled at auction through Christie's. Bauer's son told CBS News that his mother had once wanted to paint the sled and use it as a plant stand, but Bauer told her to "just save it and put it in the closet." The sled was sold to an anonymous bidder for $233,500. + +Welles's Oscar for Best Original Screenplay was believed to be lost until it was rediscovered in 1994. It was withdrawn from a 2007 auction at Sotheby's when bidding failed to reach its estimate of $800,000 to $1.2 million. Owned by the charitable Dax Foundation, it was auctioned for $861,542 in 2011 to an anonymous buyer. Mankiewicz's Oscar was sold at least twice, in 1999 and again in 2012, the latest price being $588,455. + +In 1989, Mankiewicz's personal copy of the Citizen Kane script was auctioned at Christie's. The leather-bound volume included the final shooting script and a carbon copy of American that bore handwritten annotations—purportedly made by Hearst's lawyers, who were said to have obtained it in the manner described by Kael in "Raising Kane". Estimated to bring $70,000 to $90,000, it sold for a record $231,000. + +In 2007, Welles's personal copy of the last revised draft of Citizen Kane before the shooting script was sold at Sotheby's for $97,000. A second draft of the script titled American, marked "Mr. Welles' working copy", was auctioned by Sotheby's in 2014 for $164,692. A collection of 24 pages from a working script found in Welles's personal possessions by his daughter Beatrice Welles was auctioned in 2014 for $15,000. + +In 2014, a collection of approximately 235 Citizen Kane stills and production photos that had belonged to Welles was sold at auction for $7,812. + +Rights and home media +The composited camera negative of Citizen Kane is believed to be lost forever. The most commonly-reported explanation is that it was destroyed in a New Jersey film laboratory fire in the 1970s. However, in 2021, Nicolas Falacci revealed that he had been told "the real story" by a colleague, when he was one of two employees in the film restoration lab which assembled the 1991 "restoration" from the best available elements. Falacci noted that throughout the process he had daily visits in 1990-1 from an unnamed "older RKO executive showing up every day – nervous and sweating". According to Falacci's colleague, this elderly man was keen to cover up a clerical error he had made decades earlier when in charge of the studio's inventory, which had resulted in the original camera negatives being sent to a silver reclamation plant, destroying the nitrate film to extract its valuable silver content. Falacci's account is impossible to verify, but it would have been fully in keeping with industry standard practice for many decades, which was to destroy prints and negatives of countless older films deemed non-commercially viable, to extract the silver. + +Subsequent prints were derived from a master positive (a fine-grain preservation element) made in the 1940s and originally intended for use in overseas distribution. Modern techniques were used to produce a pristine print for a 50th Anniversary theatrical reissue in 1991 which Paramount Pictures released for then-owner Turner Broadcasting System, which earned $1.6 million in North America and worldwide. + +In 1955, RKO sold the American television rights to its film library, including Citizen Kane, to C&C Television Corp. In 1960, television rights to the pre-1959 RKO's live-action library were acquired by United Artists. RKO kept the non-broadcast television rights to its library. + +In 1976, when home video was in its infancy, entrepreneur Snuff Garrett bought cassette rights to the RKO library for what United Press International termed "a pittance". In 1978 The Nostalgia Merchant released the film through Media Home Entertainment. By 1980 the 800-title library of The Nostalgia Merchant was earning $2.3 million a year. "Nobody wanted cassettes four years ago," Garrett told UPI. "It wasn't the first time people called me crazy. It was a hobby with me which became big business." RKO Home Video released the film on VHS and Betamax in 1985. + +On December 3, 1984, The Criterion Collection released the film as its first LaserDisc. It was made from a fine grain master positive provided by the UCLA Film and Television Archive. When told about the then-new concept of having an audio commentary on the disc, Welles was skeptical but said "theoretically, that's good for teaching movies, so long as they don't talk nonsense." In 1992 Criterion released a new 50th Anniversary Edition LaserDisc. This version had an improved transfer and additional special features, including the documentary The Legacy of Citizen Kane and Welles's early short The Hearts of Age. + +Turner Broadcasting System acquired broadcast television rights to the RKO library in 1986 and the full worldwide rights to the library in 1987. The RKO Home Video unit was reorganized into Turner Home Entertainment that year. In 1991 Turner released a 50th Anniversary Edition on VHS and as a collector's edition that includes the film, the documentary Reflections On Citizen Kane, Harlan Lebo's 50th anniversary album, a poster and a copy of the original script. In 1996, Time Warner acquired Turner and Warner Home Video absorbed Turner Home Entertainment. In 2011, Warner Bros. Discovery's Warner Bros. unit had distribution rights for the film. + +In 2001, Warner Home Video released a 60th Anniversary Collectors Edition DVD. The two-disc DVD included feature-length commentaries by Roger Ebert and Peter Bogdanovich, as well as a second DVD with the feature length documentary The Battle Over Citizen Kane (1999). It was simultaneously released on VHS. The DVD was criticized for being " bright, ; the dirt and grime had been cleared away, but so had a good deal of the texture, the depth, and the sense of film grain." + +In 2003, Welles's daughter Beatrice Welles sued Turner Entertainment, claiming the Welles estate is the legal copyright holder of the film. She claimed that Welles's deal to terminate his contracts with RKO meant that Turner's copyright of the film was null and void. She also claimed that the estate of Orson Welles was owed 20% of the film's profits if her copyright claim was not upheld. In 2007 she was allowed to proceed with the lawsuit, overturning the 2004 decision in favor of Turner Entertainment on the issue of video rights. + +In 2011, it was released on Blu-ray and DVD in a 70th Anniversary Edition. The San Francisco Chronicle called it "the Blu-ray release of the year." Supplements included everything available on the 2001 Warner Home Video release, including The Battle Over Citizen Kane DVD. A 70th Anniversary Ultimate Collector's Edition added a third DVD with RKO 281 (1999), an award winning TV movie about the making of the film. Its packaging extras included a hardcover book and a folio containing mini reproductions of the original souvenir program, lobby cards, and production memos and correspondence. The transfer for the US releases were scanned as 4K resolution from three different 35mm prints and rectified the quality issues of the 2001 DVD. The rest of the world continued to receive home video releases based on the older transfer. This was partially rectified in 2016 with the release of the 75th Anniversary Edition in both the UK and US, which was a straight repackaging of the main disc from the 70th Anniversary Edition. + +On August 11, 2021 Criterion announced their first 4K Ultra HD releases, a six-film slate, would include Citizen Kane. Criterion indicated each title was to be available in a combo pack including a 4K UHD disc of the feature film as well as the film and special features on the companion Blu-rays. Citizen Kane was released on November 23, 2021 by the collection as a 4K and 3 Blu-ray disc package. However, the release was recalled because at the half-hour mark on the regular blu-ray, the contrast fell sharply, which resulted in a much darker image compared to what was supposed to occur. However this issue does not apply to the 4K version itself. + +Colorization controversy +In the 1980s, Citizen Kane became a catalyst in the controversy over the colorization of black-and-white films. One proponent of film colorization was Ted Turner, whose Turner Entertainment Company owned the RKO library. A Turner Entertainment spokesperson initially stated that Citizen Kane would not be colorized, but in July 1988 Turner said, "Citizen Kane? I'm thinking of colorizing it." In early 1989 it was reported that two companies were producing color tests for Turner Entertainment. Criticism increased when filmmaker Henry Jaglom stated that shortly before his death Welles had implored him "don't let Ted Turner deface my movie with his crayons." + +In February 1989, Turner Entertainment President Roger Mayer announced that work to colorize the film had been stopped due to provisions in Welles's 1939 contract with RKO that "could be read to prohibit colorization without permission of the Welles estate." Mayer added that Welles's contract was "quite unusual" and "other contracts we have checked out are not like this at all." Turner had only colorized the final reel of the film before abandoning the project. In 1991 one minute of the colorized test footage was included in the BBC Arena documentary The Complete Citizen Kane. + +The colorization controversy was a factor in the passage of the National Film Preservation Act in 1988 which created the National Film Registry the following year. ABC News anchor Peter Jennings reported that "one major reason for doing this is to require people like the broadcaster Ted Turner, who's been adding color to some movies and re-editing others for television, to put notices on those versions saying that the movies have been altered". + +Bibliography + + Bazin, André. The Technique of Citizen Kane. Paris, France: Les Temps modernes 2, number 17, 1947. pp. 943–949. + Biskind, Peter (ed.), Jaglom, Henry and Welles, Orson. My Lunches with Orson: Conversations between Henry Jaglom and Orson Welles. New York: Metropolitan Books, 2013. . + Bogdanovich, Peter and Welles, Orson. This is Orson Welles. HarperPerennial 1992. + Bogdanovich, Peter and Welles, Orson (uncredited). "The Kane Mutiny", in Esquire, October 1972. + Brady, Frank. Citizen Welles: A Biography of Orson Welles. New York: Charles Scribner's Sons, 1989. . + Callow, Simon. Orson Welles: The Road to Xanadu. London: Jonathan Cape, 1995. + Carringer, Robert L. The Making of Citizen Kane. Berkeley and Los Angeles: University of California Press, 1985. hardcover; 1996 revised and updated edition paperback + Carringer, Robert L. "The Scripts of Citizen Kane", in Critical Inquiry No. 5, 1978. + Cook, David A. A History of Narrative Film. W.W. Norton Company, 2004. + Gottesman, Ronald (ed.). Focus on Citizen Kane. Englewood Cliffs, New Jersey: Prentice-Hall, 1976. + Gottesman, Ronald (ed.). Perspectives on Citizen Kane. New York: G. K. Hall & Co., 1996. + Heylin, Clinton. Despite the System: Orson Welles Versus the Hollywood Studios, Chicago Review Press, 2005. + Howard, James. The Complete Films of Orson Welles. New York: Carol Publishing Group, 1991. . + Kael, Pauline, Welles, Orson and Mankiewicz, Herman J. The Citizen Kane Book. Boston: Little, Brown and Company, 1971. + Leaming, Barbara. Orson Welles, A Biography. New York: Viking Press, 1985. . + Meryman, Richard. Mank: The Wit, World and Life of Herman Mankiewicz. New York: William Morrow and Company, 1978. . + Mulvey, Laura. Citizen Kane. London: British Film Institute, 1992. + Naremore, James (ed.). Orson Welles's Citizen Kane: A Casebook in Criticism. Oxford: Oxford University Press, 2004. + Nasaw, David. The Chief: The Life of William Randolph Hearst. New York: Houghton Mifflin, 2000. + Rippy, Marguerite H. Orson Welles and the Unfinished RKO Projects: A Postmodern Perspective. Southern Illinois University Press, Illinois, 2009. + Rosenbaum, Jonathan. "I Missed It at the Movies: Objections to 'Raising Kane'", in Film Comment, Spring 1972. + Stern, Sydney Ladensohn. The Brothers Mankiewicz: Hope, Heartbreak, and Hollywood Classics. Jackson: University Press of Mississippi, 2019. + +Notes + +References + +External links + +Database + + + + + + + + Citizen Kane at Cinema Belgica + +Other + "Citizen Kane: The Once and Future Kane", essay by Bilge Ebiri on The Criterion Collection + Citizen Kane essay by Godfrey Cheshire on the National Film Registry website +Citizen Kane essay by Daniel Eagan in America's Film Legacy: The Authoritative Guide to the Landmark Movies in the National Film Registry, A&C Black, 2010 , pp. 735–737 + Citizen Kane bibliography via the UC Berkeley Media Resources Center + The American Film Institute's "100 Greatest Movies" list + Citizen Kane and Bernard Herrmann's film score + PBS: Citizen Kane (Archived) + Bright Lights Film Journal Essay + Roger Ebert: Citizen Kane + The Unofficial Citizen Kane Page + Time Magazine Top 100 + Greatest films + DVD review + "Scene-by-scene analysis" at Movie Movie + + +1941 films +1940s American films +1940s English-language films +1941 directorial debut films +1941 drama films +American black-and-white films +American business films +American drama films +American nonlinear narrative films +Cultural depictions of Adolf Hitler +Cultural depictions of Neville Chamberlain +Drama films based on actual events +Expressionist films +Films à clef +Films about mass media owners +Films about media manipulation +Films about newspaper publishing +Films about opera +Films about tabloid journalism +Films about the mass media in the United States +Films directed by Orson Welles +Films scored by Bernard Herrmann +Films set in New York City +Films set in Florida +Films set in 1871 +Films set in 1898 +Films set in the 1900s +Films set in the 1910s +Films set in the 1920s +Films set in the 1930s +Films set in 1941 +Films set in country houses +Films shot in San Diego +Films whose writer won the Best Original Screenplay Academy Award +Films with screenplays by Herman J. Mankiewicz +Films with screenplays by Orson Welles +RKO Pictures films +Spanish–American War films +United States National Film Registry films +Works about William Randolph Hearst +In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium. An early example is an invention of language, which enabled a person, through speech, to communicate what they thought, saw, heard, or felt to others. But speech limits the range of communication to the distance a voice can carry and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time. + +The process of encoding converts information from a source into symbols for communication or storage. Decoding is the reverse process, converting code symbols back into a form that the recipient understands, such as English or/and Spanish. + +One reason for coding is to enable communication in places where ordinary plain language, spoken or written, is difficult or impossible. For example, semaphore, where the configuration of flags held by a signaler or the arms of a semaphore tower encodes parts of the message, typically individual letters, and numbers. Another person standing a great distance away can interpret the flags and reproduce the words sent. + +Theory + +In information theory and computer science, a code is usually considered as an algorithm that uniquely represents symbols from some source alphabet, by encoded strings, which may be in some other target alphabet. An extension of the code for representing sequences of symbols over the source alphabet is obtained by concatenating the encoded strings. + +Before giving a mathematically precise definition, this is a brief example. The mapping + +is a code, whose source alphabet is the set and whose target alphabet is the set . Using the extension of the code, the encoded string 0011001 can be grouped into codewords as 0 011 0 01, and these in turn can be decoded to the sequence of source symbols acab. + +Using terms from formal language theory, the precise mathematical definition of this concept is as follows: let S and T be two finite sets, called the source and target alphabets, respectively. A code is a total function mapping each symbol from S to a sequence of symbols over T. The extension of , is a homomorphism of into , which naturally maps each sequence of source symbols to a sequence of target symbols. + +Variable-length codes + +In this section, we consider codes that encode each source (clear text) character by a code word from some dictionary, and concatenation of such code words give us an encoded string. Variable-length codes are especially useful when clear text characters have different probabilities; see also entropy encoding. + +A prefix code is a code with the "prefix property": there is no valid code word in the system that is a prefix (start) of any other valid code word in the set. Huffman coding is the most known algorithm for deriving prefix codes. Prefix codes are widely referred to as "Huffman codes" even when the code was not produced by a Huffman algorithm. Other examples of prefix codes are country calling codes, the country and publisher parts of ISBNs, and the Secondary Synchronization Codes used in the UMTS WCDMA 3G Wireless Standard. + +Kraft's inequality characterizes the sets of codeword lengths that are possible in a prefix code. Virtually any uniquely decodable one-to-many code, not necessarily a prefix one, must satisfy Kraft's inequality. + +Error-correcting codes + +Codes may also be used to represent data in a way more resistant to errors in transmission or storage. This so-called error-correcting code works by including carefully crafted redundancy with the stored (or transmitted) data. Examples include Hamming codes, Reed–Solomon, Reed–Muller, Walsh–Hadamard, Bose–Chaudhuri–Hochquenghem, Turbo, Golay, algebraic geometry codes, low-density parity-check codes, and space–time codes. +Error detecting codes can be optimised to detect burst errors, or random errors. + +Examples + +Codes in communication used for brevity + +A cable code replaces words (e.g. ship or invoice) with shorter words, allowing the same information to be sent with fewer characters, more quickly, and less expensively. + +Codes can be used for brevity. When telegraph messages were the state of the art in rapid long-distance communication, elaborate systems of commercial codes that encoded complete phrases into single mouths (commonly five-minute groups) were developed, so that telegraphers became conversant with such "words" as BYOXO ("Are you trying to weasel out of our deal?"), LIOUY ("Why do you not answer my question?"), BMULD ("You're a skunk!"), or AYYLU ("Not clearly coded, repeat more clearly."). Code words were chosen for various reasons: length, pronounceability, etc. Meanings were chosen to fit perceived needs: commercial negotiations, military terms for military codes, diplomatic terms for diplomatic codes, any and all of the preceding for espionage codes. Codebooks and codebook publishers proliferated, including one run as a front for the American Black Chamber run by Herbert Yardley between the First and Second World Wars. The purpose of most of these codes was to save on cable costs. The use of data coding for data compression predates the computer era; an early example is the telegraph Morse code where more-frequently used characters have shorter representations. Techniques such as Huffman coding are now used by computer-based algorithms to compress large data files into a more compact form for storage or transmission. + +Character encodings + +Character encodings are representations of textual data. A given character encoding may be associated with a specific character set (the collection of characters which it can represent), though some character sets have multiple character encodings and vice versa. Character encodings may be broadly grouped according to the number of bytes required to represent a single character: there are single-byte encodings, multibyte (also called wide) encodings, and variable-width (also called variable-length) encodings. The earliest character encodings were single-byte, the best-known example of which is ASCII. ASCII remains in use today, for example in HTTP headers. However, single-byte encodings cannot model character sets with more than 256 characters. Scripts that require large character sets such as Chinese, Japanese and Korean must be represented with multibyte encodings. Early multibyte encodings were fixed-length, meaning that although each character was represented by more than one byte, all characters used the same number of bytes ("word length"), making them suitable for decoding with a lookup table. The final group, variable-width encodings, is a subset of multibyte encodings. These use more complex encoding and decoding logic to efficiently represent large character sets while keeping the representations of more commonly used characters shorter or maintaining backward compatibility properties. This group includes UTF-8, an encoding of the Unicode character set; UTF-8 is the most common encoding of text media on the Internet. + +Genetic code + +Biological organisms contain genetic material that is used to control their function and development. This is DNA, which contains units named genes from which messenger RNA is derived. This in turn produces proteins through a genetic code in which a series of triplets (codons) of four possible nucleotides can be translated into one of twenty possible amino acids. A sequence of codons results in a corresponding sequence of amino acids that form a protein molecule; a type of codon called a stop codon signals the end of the sequence. + +Gödel code +In mathematics, a Gödel code was the basis for the proof of Gödel's incompleteness theorem. Here, the idea was to map mathematical notation to a natural number (using a Gödel numbering). + +Other +There are codes using colors, like traffic lights, the color code employed to mark the nominal value of the electrical resistors or that of the trashcans devoted to specific types of garbage (paper, glass, organic, etc.). + +In marketing, coupon codes can be used for a financial discount or rebate when purchasing a product from a (usual internet) retailer. + +In military environments, specific sounds with the cornet are used for different uses: to mark some moments of the day, to command the infantry on the battlefield, etc. + +Communication systems for sensory impairments, such as sign language for deaf people and braille for blind people, are based on movement or tactile codes. + +Musical scores are the most common way to encode music. + +Specific games have their own code systems to record the matches, e.g. chess notation. + +Cryptography +In the history of cryptography, codes were once common for ensuring the confidentiality of communications, although ciphers are now used instead. + +Secret codes intended to obscure the real messages, ranging from serious (mainly espionage in military, diplomacy, business, etc.) to trivial (romance, games) can be any kind of imaginative encoding: flowers, game cards, clothes, fans, hats, melodies, birds, etc., in which the sole requirement is the pre-agreement on the meaning by both the sender and the receiver. + +Other examples +Other examples of encoding include: +Encoding (in cognition) - a basic perceptual process of interpreting incoming stimuli; technically speaking, it is a complex, multi-stage process of converting relatively objective sensory input (e.g., light, sound) into a subjectively meaningful experience. +A content format - a specific encoding format for converting a specific type of data to information. +Text encoding uses a markup language to tag the structure and other features of a text to facilitate processing by computers. (See also Text Encoding Initiative.) +Semantics encoding of formal language A informal language B is a method of representing all terms (e.g. programs or descriptions) of language A using language B. +Data compression transforms a signal into a code optimized for transmission or storage, generally done with a codec. +Neural encoding - the way in which information is represented in neurons. +Memory encoding - the process of converting sensations into memories. +Television encoding: NTSC, PAL and SECAM + +Other examples of decoding include: + Decoding (computer science) + Decoding methods, methods in communication theory for decoding codewords sent over a noisy channel + Digital signal processing, the study of signals in a digital representation and the processing methods of these signals + Digital-to-analog converter, the use of analog circuit for decoding operations + Word decoding, the use of phonics to decipher print patterns and translate them into the sounds of language + +Codes and acronyms +Acronyms and abbreviations can be considered codes, and in a sense, all languages and writing systems are codes for human thought. + +International Air Transport Association airport codes are three-letter codes used to designate airports and used for bag tags. Station codes are similarly used on railways but are usually national, so the same code can be used for different stations if they are in different countries. + +Occasionally, a code word achieves an independent existence (and meaning) while the original equivalent phrase is forgotten or at least no longer has the precise meaning attributed to the code word. For example, '30' was widely used in journalism to mean "end of story", and has been used in other contexts to signify "the end". + +See also + + Asemic writing + Cipher + Code (semiotics) + Equipment codes + Quantum error correction + Semiotics + Universal language + +References + +Further reading + + + +Signal processing +The Cheirogaleidae are the family of strepsirrhine primates containing the various dwarf and mouse lemurs. Like all other lemurs, cheirogaleids live exclusively on the island of Madagascar. + +Characteristics +Cheirogaleids are smaller than the other lemurs and, in fact, they are the smallest primates. They have soft, long fur, colored grey-brown to reddish on top, with a generally brighter underbelly. Typically, they have small ears, large, close-set eyes, and long hind legs. Like all strepsirrhines, they have fine claws at the second toe of the hind legs. They grow to a size of only 13 to 28 cm, with a tail that is very long, sometimes up to one and a half times as long as the body. They weigh no more than 500 grams, with some species weighing as little as 60 grams. + +Dwarf and mouse lemurs are nocturnal and arboreal. They are excellent climbers and can also jump far, using their long tails for balance. When on the ground (a rare occurrence), they move by hopping on their hind legs. They spend the day in tree hollows or leaf nests. Cheirogaleids are typically solitary, but sometimes live together in pairs. + +Their eyes possess a tapetum lucidum, a light-reflecting layer that improves their night vision. Some species, such as the lesser dwarf lemur, store fat at the hind legs and the base of the tail, and hibernate. Unlike lemurids, they have long upper incisors, although they do have the comb-like teeth typical of all strepsirhines. They have the dental formula: + +Cheirogaleids are omnivores, eating fruits, flowers and leaves (and sometimes nectar), as well as insects, spiders, and small vertebrates. + +The females usually have three pairs of nipples. After a meager 60-day gestation, they will bear two to four (usually two or three) young. After five to six weeks, the young are weaned and become fully mature near the end of their first year or sometime in their second year, depending on the species. In human care, they can live for up to 15 years, although their life expectancy in the wild is probably significantly shorter. + +Classification +The five genera of cheirogaleids contain 42 species. + + Infraorder Lemuriformes + Family Cheirogaleidae + Genus Cheirogaleus: dwarf lemurs + Montagne d'Ambre dwarf lemur, Cheirogaleus andysabini + Furry-eared dwarf lemur, Cheirogaleus crossleyi + Groves' dwarf lemur, Cheirogaleus grovesi + Lavasoa dwarf lemur, Cheirogaleus lavasoensis + Greater dwarf lemur, Cheirogaleus major + Fat-tailed dwarf lemur, Cheirogaleus medius + Lesser iron-gray dwarf lemur, Cheirogaleus minusculus + Ankarana dwarf lemur, Cheirogaleus shethi + Sibree's dwarf lemur, Cheirogaleus sibreei + Thomas' dwarf lemur, Cheirogaleus thomasi + Genus Microcebus: mouse lemurs +Arnhold's mouse lemur, Microcebus arnholdi + Madame Berthe's mouse lemur, Microcebus berthae + Bongolava mouse lemur Microcebus bongolavensis + Boraha mouse lemur Microcebus boraha + Danfoss' mouse lemur Microcebus danfossi + Ganzhorn's mouse lemur. Microcebus ganzhorni + Gerp's mouse lemur. Microcebus gerpi + Reddish-gray mouse lemur, Microcebus griseorufus + Jolly's mouse lemur, Microcebus jollyae + Jonah's mouse lemur, Microcebus jonahi + Goodman's mouse lemur, Microcebus lehilahytsara + MacArthur's mouse lemur, Microcebus macarthurii + Claire's mouse lemur, Microcebus mamiratra, synonymous to M. lokobensis + Bemanasy mouse lemur, Microcebus manitatra + Margot Marsh's mouse lemur, Microcebus margotmarshae + Marohita mouse lemur, Microcebus marohita + Mittermeier's mouse lemur, Microcebus mittermeieri + Gray mouse lemur, Microcebus murinus + Pygmy mouse lemur, Microcebus myoxinus + Golden-brown mouse lemur, Microcebus ravelobensis + Brown mouse lemur, Microcebus rufus + Sambirano mouse lemur, Microcebus sambiranensis + Simmons' mouse lemur, Microcebus simmonsi + Anosy mouse lemur. Microcebus tanosi + Northern rufous mouse lemur, Microcebus tavaratra + Genus Mirza: giant mouse lemurs + Coquerel's giant mouse lemur or Coquerel's dwarf lemur, Mirza coquereli + Northern giant mouse lemur, Mirza zaza + Genus Allocebus + Hairy-eared dwarf lemur, Allocebus trichotis + Genus Phaner: fork-marked lemurs + Masoala fork-marked lemur, Phaner furcifer + Pale fork-marked lemur, Phaner pallescens + Pariente's fork-marked lemur, Phaner parienti + Amber Mountain fork-marked lemur, Phaner electromontis + +Footnotes +According to the letter of the International Code of Zoological Nomenclature, the correct name for this family should be Microcebidae, but the name Cheirogaleidae has been retained for stability. +In 2008, 7 new species of Microcebus were formally recognized, but Microcebus lokobensis (Lokobe mouse lemur) was not among the additions, even though it was described in 2006. Therefore, its status as a species is still questionable. + +References + +Lemurs +Primate families +Taxa named by John Edward Gray +Taxa described in 1873 +The Callitrichidae (also called Arctopitheci or Hapalidae) are a family of New World monkeys, including marmosets, tamarins, and lion tamarins. At times, this group of animals has been regarded as a subfamily, called the Callitrichinae, of the family Cebidae. + +This taxon was traditionally thought to be a primitive lineage, from which all the larger-bodied platyrrhines evolved. However, some works argue that callitrichids are actually a dwarfed lineage. + +Ancestral stem-callitrichids likely were "normal-sized" ceboids that were dwarfed through evolutionary time. This may exemplify a rare example of insular dwarfing in a mainland context, with the "islands" being formed by biogeographic barriers during arid climatic periods when forest distribution became patchy, and/or by the extensive river networks in the Amazon Basin. + +All callitrichids are arboreal. They are the smallest of the simian primates. They eat insects, fruit, and the sap or gum from trees; occasionally, they take small vertebrates. The marmosets rely quite heavily on tree exudates, with some species (e.g. Callithrix jacchus and Cebuella pygmaea) considered obligate exudativores. + +Callitrichids typically live in small, territorial groups of about five or six animals. Their social organization is unique among primates, and is called a "cooperative polyandrous group". This communal breeding system involves groups of multiple males and females, but only one female is reproductively active. Females mate with more than one male and each shares the responsibility of carrying the offspring. + +They are the only primate group that regularly produces twins, which constitute over 80% of births in species that have been studied. Unlike other male primates, male callitrichids generally provide as much parental care as females. Parental duties may include carrying, protecting, feeding, comforting, and even engaging in play behavior with offspring. In some cases, such as in the cotton-top tamarin (Saguinus oedipus), males, particularly those that are paternal, even show a greater involvement in caregiving than females. The typical social structure seems to constitute a breeding group, with several of their previous offspring living in the group and providing significant help in rearing the young. + +Species and subspecies list + +Taxa included in the Callitrichidae are: + +Family Callitrichidae + Genus Saguinus + Subgenus Saguinus + Red-handed tamarin, Saguinus midas + Western black tamarin, Saguinus niger + Eastern black-handed tamarin, Saguinus ursulus + Pied tamarin, Saguinus bicolor + Martins's tamarin, Saguinus martinsi + Saguinus martinsi martinsi + Saguinus martinsi ochraceus + White-footed tamarin, Saguinus leucopus + Cottontop tamarin, Saguinus oedipus + Geoffroy's tamarin, Saguinus geoffroyi + Subgenus Tamarinus + Moustached tamarin, Saguinus mystax + Spix's moustached tamarin, Saguinus mystax mystax + Red-capped moustached tamarin, Saguinus mystax pileatus + White-rump moustached tamarin, Saguinus mystax pluto + White-lipped tamarin, Saguinus labiatus + Geoffroy's red-bellied tamarin, Saguinus labiatus labiatus + Gray's red-bellied tamarin, Saguinus labiatus rufiventer + Thomas's red-bellied tamarin, Saguinus labiatus thomasi + Emperor tamarin, Saguinus imperator + Black-chinned emperor tamarin, Saguinus imperator imperator + Bearded emperor tamarin, Saguinus imperator subgrisescens + Mottle-faced tamarin, Saguinus inustus + Genus Leontocebus + Black-mantled tamarin, Leontocebus nigricollis + Spix's black-mantle tamarin, Leontocebus nigricollis nigricollis + Graells's tamarin, Leontocebus nigricollis graellsi + Hernández-Camacho's black-mantle tamarin, Leontocebus nigricollis hernandezi + Brown-mantled tamarin, Leontocebus fuscicollis + Avila Pires' saddle-back tamarin, Leontocebus fuscicollis avilapiresi + Spix's saddle-back tamarin, Leontocebus fuscicollis fuscicollis + Mura's saddleback tamarin, Leontocebus fuscicollis mura + Lako's saddleback tamarin, Leontocebus fuscicollis primitivus + Andean saddle-back tamarin, Leontocebus leucogenys + Lesson's saddle-back tamarin, Leontocebus fuscus + Cruz Lima's saddle-back tamarin, Leontocebus cruzlimai + Weddell's saddle-back tamarin, Leontocebus weddelli + Weddell's tamarin, Leontocebus weddelli weddelli + Crandall's saddle-back tamarin, Leontocebus weddelli crandalli + White-mantled tamarin, Leontocebus weddelli melanoleucus + Golden-mantled tamarin, Leontocebus tripartitus + Illiger's saddle-back tamarin, Leontocebus illigeri + Red-mantled saddle-back tamarin, Leontocebus lagonotus + Geoffroy's saddle-back tamarin, Leontocebus nigrifrons + Genus Leontopithecus + Golden lion tamarin, Leontopithecus rosalia + Golden-headed lion tamarin, Leontopithecus chrysomelas + Black lion tamarin, Leontopithecus chrysopygus + Superagui lion tamarin, Leontopithecus caissara + Genus Patasola + Patasola magdalenae + Genus Micodon + Micodon kiotensis + Genus Callimico + Goeldi's marmoset, Callimico goeldii + Genus Mico + Silvery marmoset, Mico argentatus + Roosmalens' dwarf marmoset, Mico humilis + White marmoset, Mico leucippe + Black-tailed marmoset, Mico melanurus + Schneider's marmoset, Mico schneideri + Hershkovitz's marmoset, Mico intermedia + Emilia's marmoset, Mico emiliae + Black-headed marmoset, Mico nigriceps + Marca's marmoset, Mico marcai + Santarem marmoset, Mico humeralifer + Gold-and-white marmoset, Mico chrysoleucos + Maués marmoset, Mico mauesi + Sateré marmoset, Mico saterei + Rio Acarí marmoset, Mico acariensis + Rondon's marmoset, Mico rondoni + Munduruku marmoset, Mico munduruku + Genus Cebuella + Western pygmy marmoset, Cebuella pygmaea + Eastern pygmy marmoset, Cebuella niveiventris + Genus Callithrix + Common marmoset, Callithrix jacchus + Black-tufted marmoset, Callithrix penicillata + Wied's marmoset, Callithrix kuhlii + White-headed marmoset, Callithrix geoffroyi + Buffy-tufted marmoset, Callithrix aurita + Buffy-headed marmoset, Callithrix flaviceps + +References + +External links + + +Primate families + +Taxa named by Oldfield Thomas +Taxa described in 1903 +The Cebidae are one of the five families of New World monkeys now recognised. Extant members are the capuchin and squirrel monkeys. These species are found throughout tropical and subtropical South and Central America. + +Characteristics +Cebid monkeys are arboreal animals that only rarely travel on the ground. They are generally small monkeys, ranging in size up to that of the brown capuchin, with a body length of 33 to 56 cm, and a weight of 2.5 to 3.9 kilograms. They are somewhat variable in form and coloration, but all have the wide, flat, noses typical of New World monkeys. + +They are omnivorous, mostly eating fruit and insects, although the proportions of these foods vary greatly between species. They have the dental formula: + +Females give birth to one or two young after a gestation period of between 130 and 170 days, depending on species. They are social animals, living in groups of between five and forty individuals, with the smaller species typically forming larger groups. They are generally diurnal in habit. + +Classification + +Previously, New World monkeys were divided between Callitrichidae and this family. For a few recent years, marmosets, tamarins, and lion tamarins were placed as a subfamily (Callitrichinae) in Cebidae, while moving other genera from Cebidae into the families Aotidae, Pitheciidae and Atelidae. The most recent classification of New World monkeys again splits the callitrichids off, leaving only the capuchins and squirrel monkeys in this family. + + Subfamily Cebinae (capuchin monkeys) + Genus Cebus (gracile capuchin monkeys) + Colombian white-faced capuchin or Colombian white-headed capuchin, Cebus capucinus + Panamanian white-faced capuchin or Panamanian white-headed capuchin, Cebus imitator + Marañón white-fronted capuchin, Cebus yuracus + Shock-headed capuchin, Cebus cuscinus + Spix's white-fronted capuchin, Cebus unicolor + Humboldt's white-fronted capuchin, Cebus albifrons + Guianan weeper capuchin, Cebus olivaceus + Chestnut capuchin, Cebus castaneus + Ka'apor capuchin, Cebus kaapori + Venezuelan brown capuchin, Cebus brunneus + Sierra de Perijá white-fronted capuchin, Cebus leucocephalus + Río Cesar white-fronted capuchin, Cebus cesare + Varied white-fronted capuchin, Cebus versicolor + Santa Marta white-fronted capuchin, Cebus malitiosus + Ecuadorian white-fronted capuchin, Cebus aequatorialis + Genus Sapajus (robust capuchin monkeys) + Tufted capuchin, Sapajus apella + Blond capuchin, Sapajus flavius + Black-striped capuchin, Sapajus libidinosus + Azaras's capuchin, Sapajus cay + Black capuchin, Sapajus nigritus + Crested capuchin, Sapajus robustus + Golden-bellied capuchin, Sapajus xanthosternos + Subfamily Saimiriinae (squirrel monkeys) + Genus Saimiri + Bare-eared squirrel monkey, Saimiri ustus + Black squirrel monkey, Saimiri vanzolinii + Black-capped squirrel monkey, Saimiri boliviensis + Central American squirrel monkey, Saimiri oerstedi + Guianan squirrel monkey, Saimiri sciureus + Humboldt's squirrel monkey, Saimiri cassiquiarensis + Collins' squirrel monkey, Saimiri collinsi + +Extinct taxa +Genus Panamacebus +Panamacebus transitus +Subfamily Cebinae +Genus Acrecebus +Acrecebus fraileyi +Genus Killikaike +Killikaike blakei +Genus Dolichocebus +Dolichocebus gaimanensis +Subfamily Saimiriinae +Genus Saimiri +Saimiri fieldsi +Saimiri annectens +Genus Patasola +Patasola magdalenae + +References + + +New World monkeys +Primate families +Taxa named by Charles Lucien Bonaparte +Taxa described in 1831 +Chondrichthyes (; ) is a class of jawed fish that contains the cartilaginous fish or chondrichthyians, which all have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or bony fish, which have skeletons primarily composed of bone tissue. Chondrichthyes are aquatic vertebrates with paired fins, paired nares, placoid scales, conus arteriosus in the heart, and a lack of opecula and swim bladders. Within the infraphylum Gnathostomata, cartilaginous fishes are distinct from all other jawed vertebrates. + +The class is divided into two subclasses: Elasmobranchii (sharks, rays, skates and sawfish) and Holocephali (chimaeras, sometimes called ghost sharks, which are sometimes separated into their own class). Extant Chondrichthyes range in size from the finless sleeper ray to the over whale shark. + +Anatomy + +Skeleton +The skeleton is cartilaginous. The notochord is gradually replaced by a vertebral column during development, except in Holocephali, where the notochord stays intact. In some deepwater sharks, the column is reduced. + +As they do not have bone marrow, red blood cells are produced in the spleen and the epigonal organ (special tissue around the gonads, which is also thought to play a role in the immune system). They are also produced in the Leydig's organ, which is only found in certain cartilaginous fishes. The subclass Holocephali, which is a very specialized group, lacks both the Leydig's and epigonal organs. + +Appendages +Apart from electric rays, which have a thick and flabby body, with soft, loose skin, chondrichthyans have tough skin covered with dermal teeth (again, Holocephali is an exception, as the teeth are lost in adults, only kept on the clasping organ seen on the caudal ventral surface of the male), also called placoid scales (or dermal denticles), making it feel like sandpaper. In most species, all dermal denticles are oriented in one direction, making the skin feel very smooth if rubbed in one direction and very rough if rubbed in the other. + +Originally, the pectoral and pelvic girdles, which do not contain any dermal elements, did not connect. In later forms, each pair of fins became ventrally connected in the middle when scapulocoracoid and puboischiadic bars evolved. In rays, the pectoral fins are connected to the head and are very flexible. + +One of the primary characteristics present in most sharks is the heterocercal tail, which aids in locomotion. + +Body covering +Chondrichthyans have tooth-like scales called dermal denticles or placoid scales. Denticles usually provide protection, and in most cases, streamlining. Mucous glands exist in some species, as well. + +It is assumed that their oral teeth evolved from dermal denticles that migrated into the mouth, but it could be the other way around, as the teleost bony fish Denticeps clupeoides has most of its head covered by dermal teeth (as does, probably, Atherion elymus, another bony fish). This is most likely a secondary evolved characteristic, which means there is not necessarily a connection between the teeth and the original dermal scales. + +The old placoderms did not have teeth at all, but had sharp bony plates in their mouth. Thus, it is unknown whether the dermal or oral teeth evolved first. It has even been suggested that the original bony plates of all vertebrates are now gone and that the present scales are just modified teeth, even if both the teeth and body armor had a common origin a long time ago. However, there is currently no evidence of this. + +Respiratory system +All chondrichthyans breathe through five to seven pairs of gills, depending on the species. In general, pelagic species must keep swimming to keep oxygenated water moving through their gills, whilst demersal species can actively pump water in through their spiracles and out through their gills. However, this is only a general rule and many species differ. + +A spiracle is a small hole found behind each eye. These can be tiny and circular, such as found on the nurse shark (Ginglymostoma cirratum), to extended and slit-like, such as found on the wobbegongs (Orectolobidae). Many larger, pelagic species, such as the mackerel sharks (Lamnidae) and the thresher sharks (Alopiidae), no longer possess them. + +Nervous system + +In chondrichthyans, the nervous system is composed of a small brain, 8–10 pairs of cranial nerves, and a spinal cord with spinal nerves. They have several sensory organs which provide information to be processed. Ampullae of Lorenzini are a network of small jelly filled pores called electroreceptors which help the fish sense electric fields in water. This aids in finding prey, navigation, and sensing temperature. The Lateral line system has modified epithelial cells located externally which sense motion, vibration, and pressure in the water around them. Most species have large well-developed eyes. Also, they have very powerful nostrils and olfactory organs. Their inner ears consist of 3 large semicircular canals which aid in balance and orientation. Their sound detecting apparatus has limited range and is typically more powerful at lower frequencies. Some species have electric organs which can be used for defense and predation. They have relatively simple brains with the forebrain not greatly enlarged. The structure and formation of myelin in their nervous systems are nearly identical to that of tetrapods, which has led evolutionary biologists to believe that Chondrichthyes were a cornerstone group in the evolutionary timeline of myelin development. + +Immune system +Like all other jawed vertebrates, members of Chondrichthyes have an adaptive immune system. + +Reproduction + +Fertilization is internal. Development is usually live birth (ovoviviparous species) but can be through eggs (oviparous). Some rare species are viviparous. There is no parental care after birth; however, some chondrichthyans do guard their eggs. + +Capture-induced premature birth and abortion (collectively called capture-induced parturition) occurs frequently in sharks/rays when fished. Capture-induced parturition is often mistaken for natural birth by recreational fishers and is rarely considered in commercial fisheries management despite being shown to occur in at least 12% of live bearing sharks and rays (88 species to date). + +Classification +The class Chondrichthyes has two subclasses: the subclass Elasmobranchii (sharks, rays, skates, and sawfish) and the subclass Holocephali (chimaeras). To see the full list of the species, click here. + +Evolution + +Cartilaginous fish are considered to have evolved from acanthodians. The discovery of Entelognathus and several examinations of acanthodian characteristics indicate that bony fish evolved directly from placoderm like ancestors, while acanthodians represent a paraphyletic assemblage leading to Chondrichthyes. Some characteristics previously thought to be exclusive to acanthodians are also present in basal cartilaginous fish. In particular, new phylogenetic studies find cartilaginous fish to be well nested among acanthodians, with Doliodus and Tamiobatis being the closest relatives to Chondrichthyes. Recent studies vindicate this, as Doliodus had a mosaic of chondrichthyan and acanthodian traits. Dating back to the Middle and Late Ordovician Period, many isolated scales, made of dentine and bone, have a structure and growth form that is chondrichthyan-like. They may be the remains of stem-chondrichthyans, but their classification remains uncertain. + +The earliest unequivocal fossils of acanthodian-grade cartilaginous fishes are Qianodus and Fanjingshania from the early Silurian (Aeronian) of Guizhou, China around 439 million years ago, which are also the oldest unambiguous remains of any jawed vertebrates. Shenacanthus vermiformis, which lived 436 million years ago, had thoracic armour plates resembling those of placoderms. + +By the start of the Early Devonian, 419 million years ago, jawed fishes had divided into three distinct groups: the now extinct placoderms (a paraphyletic assemblage of ancient armoured fishes), the bony fishes, and the clade that includes spiny sharks and early cartilaginous fish. The modern bony fishes, class Osteichthyes, appeared in the late Silurian or early Devonian, about 416 million years ago. The first abundant genus of shark, Cladoselache, appeared in the oceans during the Devonian Period. The first Cartilaginous fishes evolved from Doliodus-like spiny shark ancestors. + +Taxonomy + Subphylum Vertebrata + └─Infraphylum Gnathostomata + ├─Placodermi — extinct (armored gnathostomes) + └Eugnathostomata (true jawed vertebrates) + ├─Acanthodii (stem cartilaginous fish) + └─Chondrichthyes (true cartilaginous fish) + ├─Holocephali (chimaeras + several extinct clades) + └Elasmobranchii (shark and rays) + ├─Selachii (true sharks) + └─Batoidea (rays and relatives) + +  +Note: Lines show evolutionary relationships. + +See also + List of cartilaginous fish + Cartilaginous versus bony fishes + Largest cartilaginous fishes + Threatened rays + Threatened sharks + Placodermi + +References + +Further reading + + Taxonomy of Chondrichthyes + Images of many sharks, skates and rays on Morphbank + + +Fish classes +Pridoli first appearances +Extant Silurian first appearances +Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné, was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . + +Linnaeus was the son of a curate and he was born in Råshult, the countryside of Småland, in southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect and classify animals, plants, and minerals, while publishing several volumes. By the time of his death in 1778, he was one of the most acclaimed scientists in Europe. + +Philosopher Jean-Jacques Rousseau sent him the message: "Tell him I know no greater man on Earth." Johann Wolfgang von Goethe wrote: "With the exception of Shakespeare and Spinoza, I know no one among the no longer living who has influenced me more strongly." Swedish author August Strindberg wrote: "Linnaeus was in reality a poet who happened to become a naturalist." Linnaeus has been called (Prince of Botanists) and "The Pliny of the North". He is also considered one of the founders of modern ecology. + +In botany and zoology, the abbreviation L. is used to indicate Linnaeus as the authority for a species' name. In older publications, the abbreviation "Linn." is found. Linnaeus's remains constitute the type specimen for the species Homo sapiens following the International Code of Zoological Nomenclature, since the sole specimen that he is known to have examined was himself. + +Early life + +Childhood + +Linnaeus was born in the village of Råshult in Småland, Sweden, on 23 May 1707. He was the first child of Nicolaus (Nils) Ingemarsson (who later adopted the family name Linnaeus) and Christina Brodersonia. His siblings were Anna Maria Linnæa, Sofia Juliana Linnæa, Samuel Linnæus (who would eventually succeed their father as rector of Stenbrohult and write a manual on beekeeping), and Emerentia Linnæa. His father taught him Latin as a small child. + +One of a long line of peasants and priests, Nils was an amateur botanist, a Lutheran minister, and the curate of the small village of Stenbrohult in Småland. Christina was the daughter of the rector of Stenbrohult, Samuel Brodersonius. + +A year after Linnaeus's birth, his grandfather Samuel Brodersonius died, and his father Nils became the rector of Stenbrohult. The family moved into the rectory from the curate's house. + +Even in his early years, Linnaeus seemed to have a liking for plants, flowers in particular. Whenever he was upset, he was given a flower, which immediately calmed him. Nils spent much time in his garden and often showed flowers to Linnaeus and told him their names. Soon Linnaeus was given his own patch of earth where he could grow plants. + +Carl's father was the first in his ancestry to adopt a permanent surname. Before that, ancestors had used the patronymic naming system of Scandinavian countries: his father was named Ingemarsson after his father Ingemar Bengtsson. When Nils was admitted to the University of Lund, he had to take on a family name. He adopted the Latinate name Linnæus after a giant linden tree (or lime tree), in Swedish, that grew on the family homestead. This name was spelled with the æ ligature. When Carl was born, he was named Carl Linnæus, with his father's family name. The son also always spelled it with the æ ligature, both in handwritten documents and in publications. Carl's patronymic would have been Nilsson, as in Carl Nilsson Linnæus. + +Early education +Linnaeus's father began teaching him basic Latin, religion, and geography at an early age. When Linnaeus was seven, Nils decided to hire a tutor for him. The parents picked Johan Telander, a son of a local yeoman. Linnaeus did not like him, writing in his autobiography that Telander "was better calculated to extinguish a child's talents than develop them". + +Two years after his tutoring had begun, he was sent to the Lower Grammar School at Växjö in 1717. Linnaeus rarely studied, often going to the countryside to look for plants. At some point, his father went to visit him and, after hearing critical assessments by his preceptors, he decided to put the youth as an apprentice to some honest cobbler. He reached the last year of the Lower School when he was fifteen, which was taught by the headmaster, Daniel Lannerus, who was interested in botany. Lannerus noticed Linnaeus's interest in botany and gave him the run of his garden. + +He also introduced him to Johan Rothman, the state doctor of Småland and a teacher at Katedralskolan (a gymnasium) in Växjö. Also a botanist, Rothman broadened Linnaeus's interest in botany and helped him develop an interest in medicine. By the age of 17, Linnaeus had become well acquainted with the existing botanical literature. He remarks in his journal that he "read day and night, knowing like the back of my hand, Arvidh Månsson's Rydaholm Book of Herbs, Tillandz's Flora Åboensis, Palmberg's Serta Florea Suecana, Bromelii's Chloros Gothica and Rudbeckii's Hortus Upsaliensis". + +Linnaeus entered the Växjö Katedralskola in 1724, where he studied mainly Greek, Hebrew, theology and mathematics, a curriculum designed for boys preparing for the priesthood. In the last year at the gymnasium, Linnaeus's father visited to ask the professors how his son's studies were progressing; to his dismay, most said that the boy would never become a scholar. Rothman believed otherwise, suggesting Linnaeus could have a future in medicine. The doctor offered to have Linnaeus live with his family in Växjö and to teach him physiology and botany. Nils accepted this offer. + +University studies + +Lund + +Rothman showed Linnaeus that botany was a serious subject. He taught Linnaeus to classify plants according to Tournefort's system. Linnaeus was also taught about the sexual reproduction of plants, according to Sébastien Vaillant. In 1727, Linnaeus, age 21, enrolled in Lund University in Skåne. He was registered as , the Latin form of his full name, which he also used later for his Latin publications. + +Professor Kilian Stobæus, natural scientist, physician and historian, offered Linnaeus tutoring and lodging, as well as the use of his library, which included many books about botany. He also gave the student free admission to his lectures. In his spare time, Linnaeus explored the flora of Skåne, together with students sharing the same interests. + +Uppsala + +In August 1728, Linnaeus decided to attend Uppsala University on the advice of Rothman, who believed it would be a better choice if Linnaeus wanted to study both medicine and botany. Rothman based this recommendation on the two professors who taught at the medical faculty at Uppsala: Olof Rudbeck the Younger and Lars Roberg. Although Rudbeck and Roberg had undoubtedly been good professors, by then they were older and not so interested in teaching. Rudbeck no longer gave public lectures, and had others stand in for him. The botany, zoology, pharmacology and anatomy lectures were not in their best state. In Uppsala, Linnaeus met a new benefactor, Olof Celsius, who was a professor of theology and an amateur botanist. He received Linnaeus into his home and allowed him use of his library, which was one of the richest botanical libraries in Sweden. + +In 1729, Linnaeus wrote a thesis, on plant sexual reproduction. This attracted the attention of Rudbeck; in May 1730, he selected Linnaeus to give lectures at the University although the young man was only a second-year student. His lectures were popular, and Linnaeus often addressed an audience of 300 people. In June, Linnaeus moved from Celsius's house to Rudbeck's to become the tutor of the three youngest of his 24 children. His friendship with Celsius did not wane and they continued their botanical expeditions. Over that winter, Linnaeus began to doubt Tournefort's system of classification and decided to create one of his own. His plan was to divide the plants by the number of stamens and pistils. He began writing several books, which would later result in, for example, and . He also produced a book on the plants grown in the Uppsala Botanical Garden, . + +Rudbeck's former assistant, Nils Rosén, returned to the University in March 1731 with a degree in medicine. Rosén started giving anatomy lectures and tried to take over Linnaeus's botany lectures, but Rudbeck prevented that. Until December, Rosén gave Linnaeus private tutoring in medicine. In December, Linnaeus had a "disagreement" with Rudbeck's wife and had to move out of his mentor's house; his relationship with Rudbeck did not appear to suffer. That Christmas, Linnaeus returned home to Stenbrohult to visit his parents for the first time in about three years. His mother had disapproved of his failing to become a priest, but she was pleased to learn he was teaching at the University. + +Expedition to Lapland + +During a visit with his parents, Linnaeus told them about his plan to travel to Lapland; Rudbeck had made the journey in 1695, but the detailed results of his exploration were lost in a fire seven years afterwards. Linnaeus's hope was to find new plants, animals and possibly valuable minerals. He was also curious about the customs of the native Sami people, reindeer-herding nomads who wandered Scandinavia's vast tundras. In April 1732, Linnaeus was awarded a grant from the Royal Society of Sciences in Uppsala for his journey. + +Linnaeus began his expedition from Uppsala on 12 May 1732, just before he turned 25. He travelled on foot and horse, bringing with him his journal, botanical and ornithological manuscripts and sheets of paper for pressing plants. Near Gävle he found great quantities of Campanula serpyllifolia, later known as Linnaea borealis, the twinflower that would become his favourite. He sometimes dismounted on the way to examine a flower or rock and was particularly interested in mosses and lichens, the latter a main part of the diet of the reindeer, a common and economically important animal in Lapland. + +Linnaeus travelled clockwise around the coast of the Gulf of Bothnia, making major inland incursions from Umeå, Luleå and Tornio. He returned from his six-month-long, over expedition in October, having gathered and observed many plants, birds and rocks. Although Lapland was a region with limited biodiversity, Linnaeus described about 100 previously unidentified plants. These became the basis of his book . However, on the expedition to Lapland, Linnaeus used Latin names to describe organisms because he had not yet developed the binomial system. + +In Linnaeus's ideas about nomenclature and classification were first used in a practical way, making this the first proto-modern Flora. The account covered 534 species, used the Linnaean classification system and included, for the described species, geographical distribution and taxonomic notes. It was Augustin Pyramus de Candolle who attributed Linnaeus with as the first example in the botanical genre of Flora writing. Botanical historian E. L. Greene described as "the most classic and delightful" of Linnaeus's works. + +It was also during this expedition that Linnaeus had a flash of insight regarding the classification of mammals. Upon observing the lower jawbone of a horse at the side of a road he was travelling, Linnaeus remarked: "If I only knew how many teeth and of what kind every animal had, how many teats and where they were placed, I should perhaps be able to work out a perfectly natural system for the arrangement of all quadrupeds." + +In 1734, Linnaeus led a small group of students to Dalarna. Funded by the Governor of Dalarna, the expedition was to catalogue known natural resources and discover new ones, but also to gather intelligence on Norwegian mining activities at Røros. + +Years in the Dutch Republic (1735–38) + +Doctorate + +His relations with Nils Rosén having worsened, Linnaeus accepted an invitation from Claes Sohlberg, son of a mining inspector, to spend the Christmas holiday in Falun, where Linnaeus was permitted to visit the mines. + +In April 1735, at the suggestion of Sohlberg's father, Linnaeus and Sohlberg set out for the Dutch Republic, where Linnaeus intended to study medicine at the University of Harderwijk while tutoring Sohlberg in exchange for an annual salary. At the time, it was common for Swedes to pursue doctoral degrees in the Netherlands, then a highly revered place to study natural history. + +On the way, the pair stopped in Hamburg, where they met the mayor, who proudly showed them a supposed wonder of nature in his possession: the taxidermied remains of a seven-headed hydra. Linnaeus quickly discovered the specimen was a fake, cobbled together from the jaws and paws of weasels and the skins of snakes. The provenance of the hydra suggested to Linnaeus that it had been manufactured by monks to represent the Beast of Revelation. Even at the risk of incurring the mayor's wrath, Linnaeus made his observations public, dashing the mayor's dreams of selling the hydra for an enormous sum. Linnaeus and Sohlberg were forced to flee from Hamburg. + +Linnaeus began working towards his degree as soon as he reached Harderwijk, a university known for awarding degrees in as little as a week. He submitted a dissertation, written back in Sweden, entitled Dissertatio medica inauguralis in qua exhibetur hypothesis nova de febrium intermittentium causa, in which he laid out his hypothesis that malaria arose only in areas with clay-rich soils. Although he failed to identify the true source of disease transmission, (i.e., the Anopheles mosquito), he did correctly predict that Artemisia annua (wormwood) would become a source of antimalarial medications. + +Within two weeks he had completed his oral and practical examinations and was awarded a doctoral degree. + +That summer Linnaeus reunited with Peter Artedi, a friend from Uppsala with whom he had once made a pact that should either of the two predecease the other, the survivor would finish the decedent's work. Ten weeks later, Artedi drowned in the canals of Amsterdam, leaving behind an unfinished manuscript on the classification of fish. + +Publishing of +One of the first scientists Linnaeus met in the Netherlands was Johan Frederik Gronovius, to whom Linnaeus showed one of the several manuscripts he had brought with him from Sweden. The manuscript described a new system for classifying plants. When Gronovius saw it, he was very impressed, and offered to help pay for the printing. With an additional monetary contribution by the Scottish doctor Isaac Lawson, the manuscript was published as (1735). + +Linnaeus became acquainted with one of the most respected physicians and botanists in the Netherlands, Herman Boerhaave, who tried to convince Linnaeus to make a career there. Boerhaave offered him a journey to South Africa and America, but Linnaeus declined, stating he would not stand the heat. Instead, Boerhaave convinced Linnaeus that he should visit the botanist Johannes Burman. After his visit, Burman, impressed with his guest's knowledge, decided Linnaeus should stay with him during the winter. During his stay, Linnaeus helped Burman with his . Burman also helped Linnaeus with the books on which he was working: and . + +George Clifford, Philip Miller, and Johann Jacob Dillenius + +In August 1735, during Linnaeus's stay with Burman, he met George Clifford III, a director of the Dutch East India Company and the owner of a rich botanical garden at the estate of Hartekamp in Heemstede. Clifford was very impressed with Linnaeus's ability to classify plants, and invited him to become his physician and superintendent of his garden. Linnaeus had already agreed to stay with Burman over the winter, and could thus not accept immediately. However, Clifford offered to compensate Burman by offering him a copy of Sir Hans Sloane's Natural History of Jamaica, a rare book, if he let Linnaeus stay with him, and Burman accepted. On 24 September 1735, Linnaeus moved to Hartekamp to become personal physician to Clifford, and curator of Clifford's herbarium. He was paid 1,000 florins a year, with free board and lodging. Though the agreement was only for a winter of that year, Linnaeus practically stayed there until 1738. It was here that he wrote a book Hortus Cliffortianus, in the preface of which he described his experience as "the happiest time of my life". (A portion of Hartekamp was declared as public garden in April 1956 by the Heemstede local authority, and was named "Linnaeushof". It eventually became, as it is claimed, the biggest playground in Europe.) + +In July 1736, Linnaeus travelled to England, at Clifford's expense. He went to London to visit Sir Hans Sloane, a collector of natural history, and to see his cabinet, as well as to visit the Chelsea Physic Garden and its keeper, Philip Miller. He taught Miller about his new system of subdividing plants, as described in . Miller was in fact reluctant to use the new binomial nomenclature, preferring the classifications of Joseph Pitton de Tournefort and John Ray at first. Linnaeus, nevertheless, applauded Miller's Gardeners Dictionary, the conservative Scot actually retained in his dictionary a number of pre-Linnaean binomial signifiers discarded by Linnaeus but which have been retained by modern botanists. He only fully changed to the Linnaean system in the edition of The Gardeners Dictionary of 1768. Miller ultimately was impressed, and from then on started to arrange the garden according to Linnaeus's system. + +Linnaeus also travelled to Oxford University to visit the botanist Johann Jacob Dillenius. He failed to make Dillenius publicly fully accept his new classification system, though the two men remained in correspondence for many years afterwards. Linnaeus dedicated his Critica Botanica to him, as "opus botanicum quo absolutius mundus non-vidit". Linnaeus would later name a genus of tropical tree Dillenia in his honour. He then returned to Hartekamp, bringing with him many specimens of rare plants. The next year, 1737, he published , in which he described 935 genera of plants, and shortly thereafter he supplemented it with , with another sixty (sexaginta) genera. + +His work at Hartekamp led to another book, , a catalogue of the botanical holdings in the herbarium and botanical garden of Hartekamp. He wrote it in nine months (completed in July 1737), but it was not published until 1738. It contains the first use of the name Nepenthes, which Linnaeus used to describe a genus of pitcher plants. + +Linnaeus stayed with Clifford at Hartekamp until 18 October 1737 (new style), when he left the house to return to Sweden. Illness and the kindness of Dutch friends obliged him to stay some months longer in Holland. In May 1738, he set out for Sweden again. On the way home, he stayed in Paris for about a month, visiting botanists such as Antoine de Jussieu. After his return, Linnaeus never again left Sweden. + +Return to Sweden + +When Linnaeus returned to Sweden on 28 June 1738, he went to Falun, where he entered into an engagement to Sara Elisabeth Moræa. Three months later, he moved to Stockholm to find employment as a physician, and thus to make it possible to support a family. Once again, Linnaeus found a patron; he became acquainted with Count Carl Gustav Tessin, who helped him get work as a physician at the Admiralty. During this time in Stockholm, Linnaeus helped found the Royal Swedish Academy of Science; he became the first Praeses of the academy by drawing of lots. + +Because his finances had improved and were now sufficient to support a family, he received permission to marry his fiancée, Sara Elisabeth Moræa. Their wedding was held 26 June 1739. Seventeen months later, Sara gave birth to their first son, Carl. Two years later, a daughter, Elisabeth Christina, was born, and the subsequent year Sara gave birth to Sara Magdalena, who died when 15 days old. Sara and Linnaeus would later have four other children: Lovisa, , Johannes and Sophia. + +In May 1741, Linnaeus was appointed Professor of Medicine at Uppsala University, first with responsibility for medicine-related matters. Soon, he changed place with the other Professor of Medicine, Nils Rosén, and thus was responsible for the Botanical Garden (which he would thoroughly reconstruct and expand), botany and natural history, instead. In October that same year, his wife and nine-month-old son followed him to live in Uppsala. + +Öland and Gotland +Ten days after he was appointed Professor, he undertook an expedition to the island provinces of Öland and Gotland with six students from the university to look for plants useful in medicine. First, they travelled to Öland and stayed there until 21 June, when they sailed to Visby in Gotland. Linnaeus and the students stayed on Gotland for about a month, and then returned to Uppsala. During this expedition, they found 100 previously unrecorded plants. The observations from the expedition were later published in , written in Swedish. Like , it contained both zoological and botanical observations, as well as observations concerning the culture in Öland and Gotland. + +During the summer of 1745, Linnaeus published two more books: and . was a strictly botanical book, while was zoological. Anders Celsius had created the temperature scale named after him in 1742. Celsius's scale was inverted compared to today, the boiling point at 0 °C and freezing point at 100 °C. In 1745, Linnaeus inverted the scale to its present standard. + +Västergötland +In the summer of 1746, Linnaeus was once again commissioned by the Government to carry out an expedition, this time to the Swedish province of Västergötland. He set out from Uppsala on 12 June and returned on 11 August. On the expedition his primary companion was Erik Gustaf Lidbeck, a student who had accompanied him on his previous journey. Linnaeus described his findings from the expedition in the book , published the next year. After he returned from the journey, the Government decided Linnaeus should take on another expedition to the southernmost province Scania. This journey was postponed, as Linnaeus felt too busy. + +In 1747, Linnaeus was given the title archiater, or chief physician, by the Swedish king Adolf Frederick—a mark of great respect. The same year he was elected member of the Academy of Sciences in Berlin. + +Scania +In the spring of 1749, Linnaeus could finally journey to Scania, again commissioned by the Government. With him he brought his student, Olof Söderberg. On the way to Scania, he made his last visit to his brothers and sisters in Stenbrohult since his father had died the previous year. The expedition was similar to the previous journeys in most aspects, but this time he was also ordered to find the best place to grow walnut and Swedish whitebeam trees; these trees were used by the military to make rifles. While there, they also visited the Ramlösa mineral spa, where he remarked on the quality of its ferruginous water. The journey was successful, and Linnaeus's observations were published the next year in . + +Rector of Uppsala University + +In 1750, Linnaeus became rector of Uppsala University, starting a period where natural sciences were esteemed. Perhaps the most important contribution he made during his time at Uppsala was to teach; many of his students travelled to various places in the world to collect botanical samples. Linnaeus called the best of these students his "apostles". His lectures were normally very popular and were often held in the Botanical Garden. He tried to teach the students to think for themselves and not trust anybody, not even him. Even more popular than the lectures were the botanical excursions made every Saturday during summer, where Linnaeus and his students explored the flora and fauna in the vicinity of Uppsala. + +Philosophia Botanica +Linnaeus published Philosophia Botanica in 1751. The book contained a complete survey of the taxonomy system he had been using in his earlier works. It also contained information of how to keep a journal on travels and how to maintain a botanical garden. + +Nutrix Noverca + +During Linnaeus's time it was normal for upper class women to have wet nurses for their babies. Linnaeus joined an ongoing campaign to end this practice in Sweden and promote breast-feeding by mothers. In 1752 Linnaeus published a thesis along with Frederick Lindberg, a physician student, based on their experiences. In the tradition of the period, this dissertation was essentially an idea of the presiding reviewer (prases) expounded upon by the student. Linnaeus's dissertation was translated into French by J. E. Gilibert in 1770 as La Nourrice marâtre, ou Dissertation sur les suites funestes du nourrisage mercénaire. Linnaeus suggested that children might absorb the personality of their wet nurse through the milk. He admired the child care practices of the Lapps and pointed out how healthy their babies were compared to those of Europeans who employed wet nurses. He compared the behaviour of wild animals and pointed out how none of them denied their newborns their breastmilk. It is thought that his activism played a role in his choice of the term Mammalia for the class of organisms. + +Species Plantarum + +Linnaeus published Species Plantarum, the work which is now internationally accepted as the starting point of modern botanical nomenclature, in 1753. The first volume was issued on 24 May, the second volume followed on 16 August of the same year. The book contained 1,200 pages and was published in two volumes; it described over 7,300 species. The same year the king dubbed him knight of the Order of the Polar Star, the first civilian in Sweden to become a knight in this order. He was then seldom seen not wearing the order's insignia. + +Ennoblement + +Linnaeus felt Uppsala was too noisy and unhealthy, so he bought two farms in 1758: Hammarby and Sävja. The next year, he bought a neighbouring farm, Edeby. He spent the summers with his family at Hammarby; initially it only had a small one-storey house, but in 1762 a new, larger main building was added. In Hammarby, Linnaeus made a garden where he could grow plants that could not be grown in the Botanical Garden in Uppsala. He began constructing a museum on a hill behind Hammarby in 1766, where he moved his library and collection of plants. A fire that destroyed about one third of Uppsala and had threatened his residence there necessitated the move. + +Since the initial release of in 1735, the book had been expanded and reprinted several times; the tenth edition was released in 1758. This edition established itself as the starting point for zoological nomenclature, the equivalent of . + +The Swedish King Adolf Frederick granted Linnaeus nobility in 1757, but he was not ennobled until 1761. With his ennoblement, he took the name Carl von Linné (Latinised as ), 'Linné' being a shortened and gallicised version of 'Linnæus', and the German nobiliary particle 'von' signifying his ennoblement. The noble family's coat of arms prominently features a twinflower, one of Linnaeus's favourite plants; it was given the scientific name Linnaea borealis in his honour by Gronovius. The shield in the coat of arms is divided into thirds: red, black and green for the three kingdoms of nature (animal, mineral and vegetable) in Linnaean classification; in the centre is an egg "to denote Nature, which is continued and perpetuated in ovo." At the bottom is a phrase in Latin, borrowed from the Aeneid, which reads "Famam extendere factis": we extend our fame by our deeds. Linnaeus inscribed this personal motto in books that were given to him by friends. + +After his ennoblement, Linnaeus continued teaching and writing. His reputation had spread over the world, and he corresponded with many different people. For example, Catherine II of Russia sent him seeds from her country. He also corresponded with Giovanni Antonio Scopoli, "the Linnaeus of the Austrian Empire", who was a doctor and a botanist in Idrija, Duchy of Carniola (nowadays Slovenia). Scopoli communicated all of his research, findings, and descriptions (for example of the olm and the dormouse, two little animals hitherto unknown to Linnaeus). Linnaeus greatly respected Scopoli and showed great interest in his work. He named a solanaceous genus, Scopolia, the source of scopolamine, after him, but because of the great distance between them, they never met. + +Final years + +Linnaeus was relieved of his duties in the Royal Swedish Academy of Science in 1763, but continued his work there as usual for more than ten years after. In 1769 he was elected to the American Philosophical Society for his work. He stepped down as rector at Uppsala University in December 1772, mostly due to his declining health. + +Linnaeus's last years were troubled by illness. He had had a disease called the Uppsala fever in 1764, but survived due to the care of Rosén. He developed sciatica in 1773, and the next year, he had a stroke which partially paralysed him. He had a second stroke in 1776, losing the use of his right side and leaving him bereft of his memory; while still able to admire his own writings, he could not recognise himself as their author. + +In December 1777, he had another stroke which greatly weakened him, and eventually led to his death on 10 January 1778 in Hammarby. Despite his desire to be buried in Hammarby, he was buried in Uppsala Cathedral on 22 January. + +His library and collections were left to his widow Sara and their children. Joseph Banks, an eminent botanist, wished to purchase the collection, but his son Carl refused the offer and instead moved the collection to Uppsala. In 1783 Carl died and Sara inherited the collection, having outlived both her husband and son. She tried to sell it to Banks, but he was no longer interested; instead an acquaintance of his agreed to buy the collection. The acquaintance was a 24-year-old medical student, James Edward Smith, who bought the whole collection: 14,000 plants, 3,198 insects, 1,564 shells, about 3,000 letters and 1,600 books. Smith founded the Linnean Society of London five years later. + +The von Linné name ended with his son Carl, who never married. His other son, Johannes, had died aged 3. There are over two hundred descendants of Linnaeus through two of his daughters. + +Apostles + +During Linnaeus's time as Professor and Rector of Uppsala University, he taught many devoted students, 17 of whom he called "apostles". They were the most promising, most committed students, and all of them made botanical expeditions to various places in the world, often with his help. The amount of this help varied; sometimes he used his influence as Rector to grant his apostles a scholarship or a place on an expedition. To most of the apostles he gave instructions of what to look for on their journeys. Abroad, the apostles collected and organised new plants, animals and minerals according to Linnaeus's system. Most of them also gave some of their collection to Linnaeus when their journey was finished. Thanks to these students, the Linnaean system of taxonomy spread through the world without Linnaeus ever having to travel outside Sweden after his return from Holland. The British botanist William T. Stearn notes, without Linnaeus's new system, it would not have been possible for the apostles to collect and organise so many new specimens. Many of the apostles died during their expeditions. + +Early expeditions +Christopher Tärnström, the first apostle and a 43-year-old pastor with a wife and children, made his journey in 1746. He boarded a Swedish East India Company ship headed for China. Tärnström never reached his destination, dying of a tropical fever on Côn Sơn Island the same year. Tärnström's widow blamed Linnaeus for making her children fatherless, causing Linnaeus to prefer sending out younger, unmarried students after Tärnström. Six other apostles later died on their expeditions, including Pehr Forsskål and Pehr Löfling. + +Two years after Tärnström's expedition, Finnish-born Pehr Kalm set out as the second apostle to North America. There he spent two-and-a-half years studying the flora and fauna of Pennsylvania, New York, New Jersey and Canada. Linnaeus was overjoyed when Kalm returned, bringing back with him many pressed flowers and seeds. At least 90 of the 700 North American species described in Species Plantarum had been brought back by Kalm. + +Cook expeditions and Japan + +Daniel Solander was living in Linnaeus's house during his time as a student in Uppsala. Linnaeus was very fond of him, promising Solander his eldest daughter's hand in marriage. On Linnaeus's recommendation, Solander travelled to England in 1760, where he met the English botanist Joseph Banks. With Banks, Solander joined James Cook on his expedition to Oceania on the Endeavour in 1768–71. Solander was not the only apostle to journey with James Cook; Anders Sparrman followed on the Resolution in 1772–75 bound for, among other places, Oceania and South America. Sparrman made many other expeditions, one of them to South Africa. + +Perhaps the most famous and successful apostle was Carl Peter Thunberg, who embarked on a nine-year expedition in 1770. He stayed in South Africa for three years, then travelled to Japan. All foreigners in Japan were forced to stay on the island of Dejima outside Nagasaki, so it was thus hard for Thunberg to study the flora. He did, however, manage to persuade some of the translators to bring him different plants, and he also found plants in the gardens of Dejima. He returned to Sweden in 1779, one year after Linnaeus's death. + +Major publications + +Systema Naturae + +The first edition of was printed in the Netherlands in 1735. It was a twelve-page work. By the time it reached its 10th edition in 1758, it classified 4,400 species of animals and 7,700 species of plants. People from all over the world sent their specimens to Linnaeus to be included. By the time he started work on the 12th edition, Linnaeus needed a new invention—the index card—to track classifications. + +In Systema Naturae, the unwieldy names mostly used at the time, such as "", were supplemented with concise and now familiar "binomials", composed of the generic name, followed by a specific epithet—in the case given, Physalis angulata. These binomials could serve as a label to refer to the species. Higher taxa were constructed and arranged in a simple and orderly manner. Although the system, now known as binomial nomenclature, was partially developed by the Bauhin brothers (see Gaspard Bauhin and Johann Bauhin) almost 200 years earlier, Linnaeus was the first to use it consistently throughout the work, including in monospecific genera, and may be said to have popularised it within the scientific community. + +After the decline in Linnaeus's health in the early 1770s, publication of editions of Systema Naturae went in two different directions. Another Swedish scientist, Johan Andreas Murray issued the Regnum Vegetabile section separately in 1774 as the Systema Vegetabilium, rather confusingly labelled the 13th edition. Meanwhile, a 13th edition of the entire Systema appeared in parts between 1788 and 1793 under the editorship of Johann Friedrich Gmelin. It was through the Systema Vegetabilium that Linnaeus's work became widely known in England, following its translation from the Latin by the Lichfield Botanical Society as A System of Vegetables (1783–1785). + +Orbis eruditi judicium de Caroli Linnaei MD scriptis + +('Opinion of the learned world on the writings of Carl Linnaeus, Doctor') Published in 1740, this small octavo-sized pamphlet was presented to the State Library of New South Wales by the Linnean Society of NSW in 2018. This is considered among the rarest of all the writings of Linnaeus, and crucial to his career, securing him his appointment to a professorship of medicine at Uppsala University. From this position he laid the groundwork for his radical new theory of classifying and naming organisms for which he was considered the founder of modern taxonomy. + +(or, more fully, ) was first published in 1753, as a two-volume work. Its prime importance is perhaps that it is the primary starting point of plant nomenclature as it exists today. + +was first published in 1737, delineating plant genera. Around 10 editions were published, not all of them by Linnaeus himself; the most important is the 1754 fifth edition. In it Linnaeus divided the plant Kingdom into 24 classes. One, Cryptogamia, included all the plants with concealed reproductive parts (algae, fungi, mosses and liverworts and ferns). + +(1751) was a summary of Linnaeus's thinking on plant classification and nomenclature, and an elaboration of the work he had previously published in (1736) and (1737). Other publications forming part of his plan to reform the foundations of botany include his and : all were printed in Holland (as were (1737) and (1735)), the Philosophia being simultaneously released in Stockholm. + +Collections + +At the end of his lifetime the Linnean collection in Uppsala was considered one of the finest collections of natural history objects in Sweden. Next to his own collection he had also built up a museum for the university of Uppsala, which was supplied by material donated by Carl Gyllenborg (in 1744–1745), crown-prince Adolf Fredrik (in 1745), Erik Petreus (in 1746), Claes Grill (in 1746), Magnus Lagerström (in 1748 and 1750) and Jonas Alströmer (in 1749). The relation between the museum and the private collection was not formalised and the steady flow of material from Linnean pupils were incorporated to the private collection rather than to the museum. Linnaeus felt his work was reflecting the harmony of nature and he said in 1754 "the earth is then nothing else but a museum of the all-wise creator's masterpieces, divided into three chambers". He had turned his own estate into a microcosm of that 'world museum'. + +In April 1766 parts of the town were destroyed by a fire and the Linnean private collection was subsequently moved to a barn outside the town, and shortly afterwards to a single-room stone building close to his country house at Hammarby near Uppsala. This resulted in a physical separation between the two collections; the museum collection remained in the botanical garden of the university. Some material which needed special care (alcohol specimens) or ample storage space was moved from the private collection to the museum. + +In Hammarby the Linnean private collections suffered seriously from damp and the depredations by mice and insects. Carl von Linné's son (Carl Linnaeus) inherited the collections in 1778 and retained them until his own death in 1783. Shortly after Carl von Linné's death his son confirmed that mice had caused "horrible damage" to the plants and that also moths and mould had caused considerable damage. He tried to rescue them from the neglect they had suffered during his father's later years, and also added further specimens. This last activity however reduced rather than augmented the scientific value of the original material. + +In 1784 the young medical student James Edward Smith purchased the entire specimen collection, library, manuscripts, and correspondence of Carl Linnaeus from his widow and daughter and transferred the collections to London. Not all material in Linné's private collection was transported to England. Thirty-three fish specimens preserved in alcohol were not sent and were later lost. + +In London Smith tended to neglect the zoological parts of the collection; he added some specimens and also gave some specimens away. Over the following centuries the Linnean collection in London suffered enormously at the hands of scientists who studied the collection, and in the process disturbed the original arrangement and labels, added specimens that did not belong to the original series and withdrew precious original type material. + +Much material which had been intensively studied by Linné in his scientific career belonged to the collection of Queen Lovisa Ulrika (1720–1782) (in the Linnean publications referred to as "Museum Ludovicae Ulricae" or "M. L. U."). This collection was donated by her grandson King Gustav IV Adolf (1778–1837) to the museum in Uppsala in 1804. Another important collection in this respect was that of her husband King Adolf Fredrik (1710–1771) (in the Linnean sources known as "Museum Adolphi Friderici" or "Mus. Ad. Fr."), the wet parts (alcohol collection) of which were later donated to the Royal Swedish Academy of Sciences, and is today housed in the Swedish Museum of Natural History at Stockholm. The dry material was transferred to Uppsala. + +System of taxonomy + +The establishment of universally accepted conventions for the naming of organisms was Linnaeus's main contribution to taxonomy—his work marks the starting point of consistent use of binomial nomenclature. During the 18th century expansion of natural history knowledge, Linnaeus also developed what became known as the Linnaean taxonomy; the system of scientific classification now widely used in the biological sciences. A previous zoologist Rumphius (1627–1702) had more or less approximated the Linnaean system and his material contributed to the later development of the binomial scientific classification by Linnaeus. + +The Linnaean system classified nature within a nested hierarchy, starting with three kingdoms. Kingdoms were divided into classes and they, in turn, into orders, and thence into genera (singular: genus), which were divided into species (singular: species). Below the rank of species he sometimes recognised taxa of a lower (unnamed) rank; these have since acquired standardised names such as variety in botany and subspecies in zoology. Modern taxonomy includes a rank of family between order and genus and a rank of phylum between kingdom and class that were not present in Linnaeus's original system. + +Linnaeus's groupings were based upon shared physical characteristics, and not based upon differences. Of his higher groupings, only those for animals are still in use, and the groupings themselves have been significantly changed since their conception, as have the principles behind them. Nevertheless, Linnaeus is credited with establishing the idea of a hierarchical structure of classification which is based upon observable characteristics and intended to reflect natural relationships. While the underlying details concerning what are considered to be scientifically valid "observable characteristics" have changed with expanding knowledge (for example, DNA sequencing, unavailable in Linnaeus's time, has proven to be a tool of considerable utility for classifying living organisms and establishing their evolutionary relationships), the fundamental principle remains sound. + +Human taxonomy + +Linnaeus's system of taxonomy was especially noted as the first to include humans (Homo) taxonomically grouped with apes (Simia), under the header of Anthropomorpha. +German biologist Ernst Haeckel speaking in 1907 noted this as the "most important sign of Linnaeus's genius". + +Linnaeus classified humans among the primates beginning with the first edition of . During his time at Hartekamp, he had the opportunity to examine several monkeys and noted similarities between them and man. He pointed out both species basically have the same anatomy; except for speech, he found no other differences. Thus he placed man and monkeys under the same category, Anthropomorpha, meaning "manlike." This classification received criticism from other biologists such as Johan Gottschalk Wallerius, Jacob Theodor Klein and Johann Georg Gmelin on the ground that it is illogical to describe man as human-like. In a letter to Gmelin from 1747, Linnaeus replied: + +The theological concerns were twofold: first, putting man at the same level as monkeys or apes would lower the spiritually higher position that man was assumed to have in the great chain of being, and second, because the Bible says man was created in the image of God (theomorphism), if monkeys/apes and humans were not distinctly and separately designed, that would mean monkeys and apes were created in the image of God as well. This was something many could not accept. The conflict between world views that was caused by asserting man was a type of animal would simmer for a century until the much greater, and still ongoing, creation–evolution controversy began in earnest with the publication of On the Origin of Species by Charles Darwin in 1859. + +After such criticism, Linnaeus felt he needed to explain himself more clearly. The 10th edition of introduced new terms, including Mammalia and Primates, the latter of which would replace Anthropomorpha as well as giving humans the full binomial Homo sapiens. The new classification received less criticism, but many natural historians still believed he had demoted humans from their former place of ruling over nature and not being a part of it. Linnaeus believed that man biologically belongs to the animal kingdom and had to be included in it. In his book , he said, "One should not vent one's wrath on animals, Theology decree that man has a soul and that the animals are mere 'automata mechanica,' but I believe they would be better advised that animals have a soul and that the difference is of nobility." + +Linnaeus added a second species to the genus Homo in based on a figure and description by Jacobus Bontius from a 1658 publication: Homo troglodytes ("caveman") and published a third in 1771: Homo lar. Swedish historian Gunnar Broberg states that the new human species Linnaeus described were actually simians or native people clad in skins to frighten colonial settlers, whose appearance had been exaggerated in accounts to Linnaeus. For Homo troglodytes Linnaeus asked the Swedish East India Company to search for one, but they did not find any signs of its existence. Homo lar has since been reclassified as Hylobates lar, the lar gibbon. + +In the first edition of , Linnaeus subdivided the human species into four varieties: "Europæus albesc[ens]" (whitish European), "Americanus rubesc[ens]" (reddish American), "Asiaticus fuscus" (tawny Asian) and "Africanus nigr[iculus]" (blackish African). +In the tenth edition of Systema Naturae he further detailed phenotypical characteristics for each variety, based on the concept of the four temperaments from classical antiquity, and changed the description of Asians' skin tone to "luridus" (yellow). Additionally, Linnaeus created a wastebasket taxon "monstrosus" for "wild and monstrous humans, unknown groups, and more or less abnormal people". + +In 1959, W. T. Stearn designated Linnaeus to be the lectotype of H. sapiens. + +Influences and economic beliefs + +Linnaeus's applied science was inspired not only by the instrumental utilitarianism general to the early Enlightenment, but also by his adherence to the older economic doctrine of Cameralism. Additionally, Linnaeus was a state interventionist. He supported tariffs, levies, export bounties, quotas, embargoes, navigation acts, subsidised investment capital, ceilings on wages, cash grants, state-licensed producer monopolies, and cartels. + +Commemoration + +Anniversaries of Linnaeus's birth, especially in centennial years, have been marked by major celebrations. Linnaeus has appeared on numerous Swedish postage stamps and banknotes. There are numerous statues of Linnaeus in countries around the world. The Linnean Society of London has awarded the Linnean Medal for excellence in botany or zoology since 1888. Following approval by the Riksdag of Sweden, Växjö University and Kalmar College merged on 1 January 2010 to become Linnaeus University. Other things named after Linnaeus include the twinflower genus Linnaea, Linnaeosicyos (a monotypic genus in the family Cucurbitaceae), the crater Linné on the Earth's moon, a street in Cambridge, Massachusetts, and the cobalt sulfide mineral Linnaeite. + +Commentary +Andrew Dickson White wrote in A History of the Warfare of Science with Theology in Christendom (1896): + +The mathematical PageRank algorithm, applied to 24 multilingual Wikipedia editions in 2014, published in PLOS ONE in 2015, placed Carl Linnaeus at the top historical figure, above Jesus, Aristotle, Napoleon, and Adolf Hitler (in that order). + +In the 21st century, Linnæus's taxonomy of human "races" has been problematised and discussed. Some critics claim that Linnæus was one of the forebears of the modern pseudoscientific notion of scientific racism, while others hold the view that while his classification was stereotyped, it did not imply that certain human "races" were superior to others. + +Standard author abbreviation + +Selected publications by Linnaeus + + + + + Linnaeus, Carl 1846 Fauna svecica. Sistens Animalia Sveciae Regni: Quadrupedia, Aves, Amphibia, Pisces, Insecta, Vermes, distributae per classes & ordines, genera & species. C. Wishoff & G.J. Wishoff, Lugdnuni Batavorum. + + see also Species Plantarum + +See also + + Linnaeus's flower clock + Johann Bartsch, colleague + Centuria Insectorum + History of botany + History of phycology + Scientific revolution + +References + +Notes + +Citations + +Sources + +Further reading + +External links + +Biographies + Biography at the Department of Systematic Botany, University of Uppsala + Biography at The Linnean Society of London + Biography from the University of California Museum of Paleontology + A four-minute biographical video from the London Natural History Museum on YouTube + Biography from Taxonomic Literature, 2nd Edition. 1976–2009. + +Resources + + + The Linnean Society of London + The Linnaeus Apostles + The Linnean Collections + The Linnean Correspondence + Linnaeus's Disciples and Apostles + The Linnaean Dissertations + Linnean Herbarium + The Linnaeus Tercentenary + Works by Carl von Linné at the Biodiversity Heritage Library + Digital edition: "Critica Botanica" by the University and State Library Düsseldorf + Digital edition: "Classes plantarum seu systemata plantarum" by the University and State Library Düsseldorf + Oratio de telluris habitabilis incremento (1744) – full digital facsimile from Linda Hall Library + +Other + Linnaeus was depicted by Jay Hosler in a parody of Peanuts titled "Good ol' Charlie Darwin". + The 15 March 2007 issue of Nature featured a picture of Linnaeus on the cover with the heading "Linnaeus's Legacy" and devoted a substantial portion to items related to Linnaeus and Linnaean taxonomy. + A tattoo of Linnaeus's definition of the order Primates mentioned by Carl Zimmer + Ginkgo biloba tree at the University of Harderwijk, said to have been planted by Linnaeus in 1735 +SL Magazine, Spring 2018 features an article by Nicholas Sparks, librarian, Collection Strategy and Development titled Origins of Taxonomy, describing a generous donation from the Linnean Society of NSW to supplement the State Library of New South Wales's collections on Carl Linnaeus of documents, photographs, prints and drawings as well as a fine portrait of Linnaeus painted about 1800. + + +1707 births +1778 deaths +18th-century writers in Latin +18th-century male writers +18th-century Swedish physicians +18th-century Swedish zoologists +18th-century Swedish writers +Age of Liberty people +Swedish arachnologists +Botanical nomenclature +Botanists active in Europe +Botanists with author abbreviations +Bryologists +Burials at Uppsala Cathedral +Fellows of the Royal Society +Historical definitions of race +Knights of the Order of the Polar Star +Members of the French Academy of Sciences +Members of the Prussian Academy of Sciences +Members of the Royal Swedish Academy of Sciences +People from Älmhult Municipality +Phycologists +Pteridologists +Swedish autobiographers +Swedish biologists +Swedish botanists +Swedish entomologists +Swedish expatriates in the Dutch Republic +Swedish Lutherans +Swedish mammalogists +Swedish mycologists +Linne, Carl von +Swedish ornithologists +Swedish taxonomists +Terminologists +Taxon authorities of Hypericum species +University of Harderwijk alumni +Uppsala University alumni +Academic staff of Uppsala University +Members of the American Philosophical Society +18th-century lexicographers +The coast, also known as the coastline or seashore, is defined as the area where land meets the ocean, or as a line that forms the boundary between the land and the coastline. Shores are influenced by the topography of the surrounding landscape, as well as by water induced erosion, such as waves. The geological composition of rock and soil dictates the type of shore which is created. The Earth has around of coastline. Coasts are important zones in natural ecosystems, often home to a wide range of biodiversity. On land, they harbor important ecosystems such as freshwater or estuarine wetlands, which are important for bird populations and other terrestrial animals. In wave-protected areas they harbor saltmarshes, mangroves or seagrasses, all of which can provide nursery habitat for finfish, shellfish, and other aquatic species. Rocky shores are usually found along exposed coasts and provide habitat for a wide range of sessile animals (e.g. mussels, starfish, barnacles) and various kinds of seaweeds. In physical oceanography, a shore is the wider fringe that is geologically modified by the action of the body of water past and present, while the beach is at the edge of the shore, representing the intertidal zone where there is one. Along tropical coasts with clear, nutrient-poor water, coral reefs can often be found between depths of . + +According to an atlas prepared by the United Nations, 44% of all humans live within 150 km (93 mi) of the sea. Due to its importance in society and its high population concentrations, the coast is important for major parts of the global food and economic system, and they provide many ecosystem services to humankind. For example, important human activities happen in port cities. Coastal fisheries (commercial, recreational, and subsistence) and aquaculture are major economic activities and create jobs, livelihoods, and protein for the majority of coastal human populations. Other coastal spaces like beaches and seaside resorts generate large revenues through tourism. Marine coastal ecosystems can also provide protection against sea level rise and tsunamis. In many countries, mangroves are the primary source of wood for fuel (e.g. charcoal) and building material. Coastal ecosystems like mangroves and seagrasses have a much higher capacity for carbon sequestration than many terrestrial ecosystems, and as such can play a critical role in the near-future to help mitigate climate change effects by uptake of atmospheric anthropogenic carbon dioxide. + +However, the economic importance of coasts makes many of these communities vulnerable to climate change, which causes increases in extreme weather and sea level rise, and related issues such as coastal erosion, saltwater intrusion and coastal flooding. Other coastal issues, such as marine pollution, marine debris, coastal development, and marine ecosystem destruction, further complicate the human uses of the coast and threaten coastal ecosystems. The interactive effects of climate change, habitat destruction, overfishing and water pollution (especially eutrophication) have led to the demise of coastal ecosystem around the globe. This has resulted in population collapse of fisheries stocks, loss of biodiversity, increased invasion of alien species, and loss of healthy habitats. International attention to these issues has been captured in Sustainable Development Goal 14 "Life Below Water" which sets goals for international policy focused on preserving marine coastal ecosystems and supporting more sustainable economic practices for coastal communities. Likewise, the United Nations has declared 2021-2030 the UN Decade on Ecosystem Restoration, but restoration of coastal ecosystems has received insufficient attention. + +Because coasts are constantly changing, a coastline's exact perimeter cannot be determined; this measurement challenge is called the coastline paradox. The term coastal zone is used to refer to a region where interactions of sea and land processes occur. Both the terms coast and coastal are often used to describe a geographic location or region located on a coastline (e.g., New Zealand's West Coast, or the East, West, and Gulf Coast of the United States.) Coasts with a narrow continental shelf that are close to the open ocean are called pelagic coast, while other coasts are more sheltered coast in a gulf or bay. A shore, on the other hand, may refer to parts of land adjoining any large body of water, including oceans (sea shore) and lakes (lake shore). + +Size + +The Earth has approximately of coastline. Coastal habitats, which extend to the margins of the continental shelves, make up about 7 percent of the Earth's oceans, but at least 85% of commercially harvested fish depend on coastal environments during at least part of their life cycle. about 2.86% of exclusive economic zones were part of marine protected areas. + +The definition of coasts varies. Marine scientists think of the "wet" (aquatic or intertidal) vegetated habitats as being coastal ecosystems (including seagrass, salt marsh etc.) whilst some terrestrial scientist might only think of coastal ecosystems as purely terrestrial plants that live close to the seashore (see also estuaries and coastal ecosystems). + +While there is general agreement in the scientific community regarding the definition of coast, in the political sphere, the delineation of the extents of a coast differ according to jurisdiction. Government authorities in various countries may define coast differently for economic and social policy reasons. + +Exact length of coastline + +Formation + +Tides often determine the range over which sediment is deposited or eroded. Areas with high tidal ranges allow waves to reach farther up the shore, and areas with lower tidal ranges produce deposition at a smaller elevation interval. The tidal range is influenced by the size and shape of the coastline. Tides do not typically cause erosion by themselves; however, tidal bores can erode as the waves surge up the river estuaries from the ocean. + +Geologists classify coasts on the basis of tidal range into macrotidal coasts with a tidal range greater than ; mesotidal coasts with a tidal range of ; and microtidal coasts with a tidal range of less than . The distinction between macrotidal and mesotidal coasts is more important. Macrotidal coasts lack barrier islands and lagoons, and are characterized by funnel-shaped estuaries containing sand ridges aligned with tidal currents. Wave action is much more important for determining bedforms of sediments deposited along mesotidal and microtidal coasts than in macrotidal coasts. + +Waves erode coastline as they break on shore releasing their energy; the larger the wave the more energy it releases and the more sediment it moves. Coastlines with longer shores have more room for the waves to disperse their energy, while coasts with cliffs and short shore faces give little room for the wave energy to be dispersed. In these areas, the wave energy breaking against the cliffs is higher, and air and water are compressed into cracks in the rock, forcing the rock apart, breaking it down. Sediment deposited by waves comes from eroded cliff faces and is moved along the coastline by the waves. This forms an abrasion or cliffed coast. + +Sediment deposited by rivers is the dominant influence on the amount of sediment located in the case of coastlines that have estuaries. Today, riverine deposition at the coast is often blocked by dams and other human regulatory devices, which remove the sediment from the stream by causing it to be deposited inland. Coral reefs are a provider of sediment for coastlines of tropical islands. + +Like the ocean which shapes them, coasts are a dynamic environment with constant change. The Earth's natural processes, particularly sea level rises, waves and various weather phenomena, have resulted in the erosion, accretion and reshaping of coasts as well as flooding and creation of continental shelves and drowned river valleys (rias). + +Importance for humans and ecosystems + +Human settlements + +More and more of the world's people live in coastal regions. According to a United Nations atlas, 44% of all people live within 150 km (93 mi) of the sea. Many major cities are on or near good harbors and have port facilities. Some landlocked places have achieved port status by building canals. + +Nations defend their coasts against military invaders, smugglers and illegal migrants. Fixed coastal defenses have long been erected in many nations, and coastal countries typically have a navy and some form of coast guard. + +Tourism +Coasts, especially those with beaches and warm water, attract tourists often leading to the development of seaside resort communities. In many island nations such as those of the Mediterranean, South Pacific Ocean and Caribbean, tourism is central to the economy. Coasts offer recreational activities such as swimming, fishing, surfing, boating, and sunbathing. + +Growth management and coastal management can be a challenge for coastal local authorities who often struggle to provide the infrastructure required by new residents, and poor management practices of construction often leave these communities and infrastructure vulnerable to processes like coastal erosion and sea level rise. In many of these communities, management practices such as beach nourishment or when the coastal infrastructure is no longer financially sustainable, managed retreat to remove communities from the coast. + +Ecosystem services + +Types + +Emergent coastline + +According to one principle of classification, an emergent coastline is a coastline that has experienced a fall in sea level, because of either a global sea-level change, or local uplift. Emergent coastlines are identifiable by the coastal landforms, which are above the high tide mark, such as raised beaches. In contrast, a submergent coastline is one where the sea level has risen, due to a global sea-level change, local subsidence, or isostatic rebound. Submergent coastlines are identifiable by their submerged, or "drowned" landforms, such as rias (drowned valleys) and fjords + +Concordant coastline + +According to the second principle of classification, a concordant coastline is a coastline where bands of different rock types run parallel to the shore. These rock types are usually of varying resistance, so the coastline forms distinctive landforms, such as coves. Discordant coastlines feature distinctive landforms because the rocks are eroded by the ocean waves. The less resistant rocks erode faster, creating inlets or bay; the more resistant rocks erode more slowly, remaining as headlands or outcroppings. + +Rivieras +Riviera is an Italian word for "shoreline", ultimately derived from Latin ripa ("riverbank"). It came to be applied as a proper name to the coast of the Ligurian Sea, in the form riviera ligure, then shortened to riviera. Historically, the Ligurian Riviera extended from Capo Corvo (Punta Bianca) south of Genoa, north and west into what is now French territory past Monaco and sometimes as far as Marseilles. Today, this coast is divided into the Italian Riviera and the French Riviera, although the French use the term "Riviera" to refer to the Italian Riviera and call the French portion the "Côte d'Azur". + +As a result of the fame of the Ligurian rivieras, the term came into English to refer to any shoreline, especially one that is sunny, topographically diverse and popular with tourists. Such places using the term include the Australian Riviera in Queensland and the Turkish Riviera along the Aegean Sea. + +Other coastal categories + A cliffed coast or abrasion coast is one where marine action has produced steep declivities known as cliffs. + A flat coast is one where the land gradually descends into the sea. + A graded shoreline is one where wind and water action has produced a flat and straight coastline. + +Landforms +The following articles describe some coastal landforms: + + Barrier island + Bay + Headland + Cove + Peninsula + +Cliff erosion + Much of the sediment deposited along a coast is the result of erosion of a surrounding cliff, or bluff. Sea cliffs retreat landward because of the constant undercutting of slopes by waves. If the slope/cliff being undercut is made of unconsolidated sediment it will erode at a much faster rate than a cliff made of bedrock. + A natural arch is formed when a headland is eroded through by waves. + Sea caves are made when certain rock beds are more susceptible to erosion than the surrounding rock beds because of different areas of weakness. These areas are eroded at a faster pace creating a hole or crevice that, through time, by means of wave action and erosion, becomes a cave. + A stack is formed when a headland is eroded away by wave and wind action. + A stump is a shortened sea stack that has been eroded away or fallen because of instability. + Wave-cut notches are caused by the undercutting of overhanging slopes which leads to increased stress on cliff material and a greater probability that the slope material will fall. The fallen debris accumulates at the bottom of the cliff and is eventually removed by waves. + A wave-cut platform forms after erosion and retreat of a sea cliff has been occurring for a long time. Gently sloping wave-cut platforms develop early on in the first stages of cliff retreat. Later, the length of the platform decreases because the waves lose their energy as they break further offshore. + +Coastal features formed by sediment + + Beach + Beach cusps + Cuspate foreland + Dune system + Mudflat + Raised beach + Ria + Shoal + Spit + Strand plain + Surge channel + Tombolo + +Coastal features formed by another feature + Estuary + Lagoon + Salt marsh +Mangrove forests +Kelp forests +Coral reefs +Oyster reefs + +Other features on the coast + + Concordant coastline + Discordant coastline + Fjord + Island + Island arc + Machair + +Coastal waters + +"Coastal waters" (or "coastal seas") is a rather general term used differently in different contexts, ranging geographically from the waters within a few kilometers of the coast, through to the entire continental shelf which may stretch for more than a hundred kilometers from land. Thus the term coastal waters is used in a slightly different way in discussions of legal and economic boundaries (see territorial waters and international waters) or when considering the geography of coastal landforms or the ecological systems operating through the continental shelf (marine coastal ecosystems). The research on coastal waters often divides into these separate areas too. + +The dynamic fluid nature of the ocean means that all components of the whole ocean system are ultimately connected, although certain regional classifications are useful and relevant. The waters of the continental shelves represent such a region. The term "coastal waters" has been used in a wide variety of different ways in different contexts. In European Union environmental management it extends from the coast to just a few nautical miles while in the United States the US EPA considers this region to extend much further offshore. + +"Coastal waters" has specific meanings in the context of commercial coastal shipping, and somewhat different meanings in the context of naval littoral warfare. Oceanographers and marine biologists have yet other takes. Coastal waters have a wide range of marine habitats from enclosed estuaries to the open waters of the continental shelf. + +Similarly, the term littoral zone has no single definition. It is the part of a sea, lake, or river that is close to the shore. In coastal environments, the littoral zone extends from the high water mark, which is rarely inundated, to shoreline areas that are permanently submerged. + +Coastal waters can be threatened by coastal eutrophication and harmful algal blooms. + +In geology +The identification of bodies of rock formed from sediments deposited in shoreline and nearshore environments (shoreline and nearshore facies) is extremely important to geologists. These provide vital clues for reconstructing the geography of ancient continents (paleogeography). The locations of these beds show the extent of ancient seas at particular points in geological time, and provide clues to the magnitudes of tides in the distant past. + +Sediments deposited in the shoreface are preserved as lenses of sandstone in which the upper part of the sandstone is coarser than the lower part (a coarsening upwards sequence). Geologists refer to these are parasequences. Each records an episode of retreat of the ocean from the shoreline over a period of 10,000 to 1,000,000 years. These often show laminations reflecting various kinds of tidal cycles. + +Some of the best-studied shoreline deposits in the world are found along the former western shore of the Western Interior Seaway, a shallow sea that flooded central North America during the late Cretaceous Period (about 100 to 66 million years ago). These are beautifully exposed along the Book Cliffs of Utah and Colorado. + +Geologic processes +The following articles describe the various geologic processes that affect a coastal zone: + + Attrition + Currents + Denudation + Deposition + Erosion + Flooding + Longshore drift + Marine sediments + Saltation + Sea level change + eustatic + isostatic + Sedimentation + Coastal sediment supply + sediment transport + solution + subaerial processes + suspension + Tides + Water waves + diffraction + refraction + wave breaking + wave shoaling + Weathering + +Wildlife + +Animals + +Larger animals that live in coastal areas include puffins, sea turtles and rockhopper penguins, among many others. Sea snails and various kinds of barnacles live on rocky coasts and scavenge on food deposited by the sea. Some coastal animals are used to humans in developed areas, such as dolphins and seagulls who eat food thrown for them by tourists. Since the coastal areas are all part of the littoral zone, there is a profusion of marine life found just off-coast, including sessile animals such as corals, sponges, starfish, mussels, seaweeds, fishes, and sea anemones. + +There are many kinds of seabirds on various coasts. These include pelicans and cormorants, who join up with terns and oystercatchers to forage for fish and shellfish. There are sea lions on the coast of Wales and other countries. + +Coastal fish + +Plants +Many coastal areas are famous for their kelp beds. Kelp is a fast-growing seaweed that can grow up to half a meter a day in ideal conditions. Mangroves, seagrasses, macroalgal beds, and salt marsh are important coastal vegetation types in tropical and temperate environments respectively. Restinga is another type of coastal vegetation. + +Threats + +Coasts also face many human-induced environmental impacts and coastal development hazards. The most important ones are: + Pollution which can be in the form of water pollution, nutrient pollution (leading to coastal eutrophication and harmful algal blooms), oil spills or marine debris that is contaminating coasts with plastic and other trash. + Sea level rise, and associated issues like coastal erosion and saltwater intrusion. + +Pollution + +The pollution of coastlines is connected to marine pollution which can occur from a number of sources: Marine debris (garbage and industrial debris); the transportation of petroleum in tankers, increasing the probability of large oil spills; small oil spills created by large and small vessels, which flush bilge water into the ocean. + +Marine pollution + +Marine debris + +Microplastics + +Sea level rise due to climate change + +Global goals +International attention to address the threats of coasts has been captured in Sustainable Development Goal 14 "Life Below Water" which sets goals for international policy focused on preserving marine coastal ecosystems and supporting more sustainable economic practices for coastal communities. Likewise, the United Nations has declared 2021-2030 the UN Decade on Ecosystem Restoration, but restoration of coastal ecosystems has received insufficient attention. + +See also + + Bank (geography) + Beach cleaning + Coastal and Estuarine Research Federation + European Atlas of the Seas + Intertidal zone + Land reclamation + List of countries by length of coastline + List of U.S. states by coastline + Offshore or Intertidal zone + Ballantine Scale + Coastal path + Shorezone + +References + +External links + Woods Hole Oceanographic Institution - organization dedicated to ocean research, exploration, and education + + +Coastal and oceanic landforms +Coastal geography +Oceanographical terminology +Articles containing video clips +Catatonia is a complex neuropsychiatric behavioral syndrome that is characterized by abnormal movements, immobility, abnormal behaviors, and withdrawal. The onset of catatonia can be acute or subtle and symptoms can wax, wane, or change during episodes. It has historically been related to schizophrenia (catatonic schizophrenia), but catatonia is most often seen in mood disorders. It is now known that catatonic symptoms are nonspecific and may be observed in other mental, neurological, and medical conditions. Catatonia is not a stand-alone diagnosis (although some experts disagree), and the term is used to describe a feature of the underlying disorder. + +There are several subtypes of catatonia: akinetic catatonia, excited catatonia, malignant catatonia, and delirious mania. + +Recognizing and treating catatonia is very important as failure to do so can lead to poor outcomes and can be potentially fatal. Treatment with benzodiazepines or ECT can lead to remission of catatonia. There is growing evidence of the effectiveness of the NMDA receptor antagonists amantadine and memantine for benzodiazepine-resistant catatonia. Antipsychotics are sometimes employed, but they can worsen symptoms and have serious adverse effects. + +Signs and symptoms +The presentation of a patient with catatonia varies greatly depending on the subtype and underlying cause, and can be acute or subtle. + +Because most patients with catatonia have an underlying psychiatric illness, the majority will present with worsening depression, mania, or psychosis followed by catatonia symptoms. Catatonia presents as a motor disturbance in which patients will display marked reduction in movement, marked agitation, or a mixture of both despite having the physical capacity to move normally. These patients may be unable to start an action or stop one. Movements and mannerisms may be repetitive, or purposeless. + +The most common signs of catatonia are immobility, mutism, withdrawal and refusal to eat, staring, negativism, posturing (rigidity), rigidity, waxy flexibility/catalepsy, stereotypy (purposeless, repetitive movements), echolalia or echopraxia, verbigeration (repeat meaningless phrases). It should not be assumed that patients presenting with catatonia are unaware of their surroundings as some patients can recall in detail their catatonic state and their actions. + +There are several subtypes of catatonia and they are characterized by the specific movement disturbance and associated features. Although catatonia can be divided into various subtypes, the natural history of catatonia is often fluctuant and different states can exist within the same individual. + +Subtypes +Withdrawn Catatonia: This form of catatonia is characterized by decreased response to external stimuli, immobility or inhibited movement, mutism, staring, posturing, and negativism. Patients may sit or stand in the same position for hours, may hold odd positions, and may resist movement of their extremities. + +Excited Catatonia: Excited catatonia is characterized by odd mannerisms/gestures, performing purposeless or inappropriate actions, excessive motor activity, restlessness, stereotypy, impulsivity, agitation, and combativeness. Speech and actions may be repetitive or mimic another person's. People in this state are extremely hyperactive and may have delusions and hallucinations. Catatonic excitement is commonly cited as one of the most dangerous mental states in psychiatry. + +Malignant Catatonia: Malignant catatonia is a life-threatening condition that may progress rapidly within a few days. It is characterized by fever, abnormalities in blood pressure, heart rate, respiratory rate, diaphoresis (sweating), and delirium. Certain lab findings are common with this presentation; however, they are nonspecific, which means that they are also present in other conditions and do not diagnose catatonia. These lab findings include: leukocytosis, elevated creatine kinase, low serum iron. The signs and symptoms of malignant catatonia overlap significantly with neuroleptic malignant syndrome (NMS) and so a careful history, review of medications, and physical exam are critical to properly differentiate these conditions. For example, if the patient has waxy flexibility and holds a position against gravity when passively moved into that position, then it is likely catatonia. If the patient has a "lead-pipe rigidity" then NMS should be the prime suspect. + +Other forms: + Periodic catatonia is an inconsistently defined entity. In the Wernicke-Kleist-Leonhard school, it is a distinct form of "non-system schizophrenia" characterized by recurrent acute phases with hyperkinetic and akinetic features and often psychotic symptoms, and the build-up of a residual state in between these acute phases, which is characterized by low-level catatonic features and aboulia of varying severity. The condition has a strong hereditary component. According to modern classifications, this may be diagnosed as a form of bipolar disorder, schizoaffective disorder or schizophrenia. Independently, the term periodic catatonia is sometimes used in modern literature to describe a syndrome of recurrent phases of acute catatonia (excited or inhibited type) with full remission between episodes, which resembles the description of "motility psychosis" in the Wernicke-Kleist-Leonhard school. + System catatonias or systematic catatonias are only defined in the Wernicke-Kleist-Leonhard school. These are chronic-progressive conditions characterized by specific disturbances of volition and psychomotricity, leading to a dramatic decline of executive and adaptive functioning and ability to communicate. They are considered forms of schizophrenia but distinct from other schizophrenic conditions. Affective flattening and apparent loss of interests are common but may be related to reduced emotional expression rather than lack of emotion. Heredity is low. Of the 21 different forms (6 "simple" and 15 "combined" forms) that have been described, most overlap only partially - if at all - with current definitions of either catatonia or schizophrenia, and thus are difficult to classify according to modern diagnostic manuals. + Early childhood catatonias are also a diagnosis exclusive to the Wernicke-Kleist-Leonhard school, and refers to system catatonias that manifest in young children. Clinically, these conditions resemble severe regressive forms of autism. + Chronic catatonia-like breakdown or autistic catatonia refers to a functional decline seen in some patients with pre-existing autism spectrum disorder and/or intellectual disability which usually runs a chronic-progressive course and encompasses attenuated catatonic symptoms as well as mood and anxiety symptoms that increasingly interfere with adaptive functioning. Onset is typically insidious and often mistaken for background autistic symptoms. Slowing of voluntary movement, reduced speech, aboulia, increased prompt dependency and obsessive-compulsive symptoms are frequently seen; negativism, (auto-)aggressive behaviors and ill-defined hallucinations have also been reported. Both the causes of this disorder as well as its prognosis appear to be heterogenous, with most patients showing partial recovery upon treatment. It seems to be related to chronic stress as a result of life transitions, loss of external time structuring, sensory sensitivities and/or traumatic experiences, co-morbid mental disorders, or other unknown causes. Since clinical catatonia can not always be diagnosed, this condition has also been renamed to the more general term "late regression". + +Complications +Patients may experience several complications from being in a catatonic state. The nature of these complications will depend on the type of catatonia being experienced by the patient. For example, patients presenting with withdrawn catatonia may have refusal to eat which will in turn lead to malnutrition and dehydration. Furthermore, if immobility is a symptom the patient is presenting with, then they may develop pressure ulcers, muscle contractions, and are at risk of developing deep vein thrombosis (DVT) and pulmonary embolus (PE). Patients with excited catatonia may be aggressive and violent, and physical trauma may result from this. Catatonia may progress to the malignant type which will present with autonomic instability and may be life-threatening. Other complications also include the development of pneumonia and neuroleptic malignant syndrome. + +Causes + +Catatonia is almost always secondary to another underlying illness, often a psychiatric disorder. Mood disorders such as a bipolar disorder and depression are the most common etiologies to progress to catatonia. Other psychiatric associations include schizophrenia and other primary psychotic disorders. It also is related to autism spectrum disorders and ADHD. Psychodynamic theorists have interpreted catatonia as a defense against the potentially destructive consequences of responsibility, and the passivity of the disorder provides relief. + +Catatonia is also seen in many medical disorders, including infections (such as encephalitis), autoimmune disorders, meningitis, focal neurological lesions (including strokes), alcohol withdrawal, abrupt or overly rapid benzodiazepine withdrawal, cerebrovascular disease, neoplasms, head injury, and some metabolic conditions (homocystinuria, diabetic ketoacidosis, hepatic encephalopathy, and hypercalcaemia). + +Pathogenesis +The pathophysiology that leads to catatonia is still poorly understood and a definite mechanism remains unknown. Neurologic studies have implicated several pathways; however, it remains unclear whether these findings are the cause or the consequence of the disorder. + +Abnormalities in GABA, glutamate signaling, serotonin, and dopamine transmission are believed to be implicated in catatonia. + +Furthermore, it has also been hypothesized that pathways that connect the basal ganglia with the cortex and thalamus is involved in the development of catatonia. + +Diagnosis + +There is not yet a definitive consensus regarding diagnostic criteria of catatonia. In the fifth edition of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM-5, 2013) and the World Health Organization's eleventh edition of the International Classification of Diseases (ICD-11, 2022), the classification is more homogeneous than in earlier editions. Prominent researchers in the field have other suggestions for diagnostic criteria. + +DSM-5 classification + +The DSM-5 does not classify catatonia as an independent disorder, but rather it classifies it as catatonia associated with another mental disorder, due to another medical condition, or as unspecified catatonia. + +Catatonia is diagnosed by the presence of three or more of the following 12 psychomotor symptoms in association with a mental disorder, medical condition, or unspecified: + stupor: no psycho-motor activity; not actively relating to the environment + catalepsy: passive induction of a posture held against gravity + waxy flexibility: allowing positioning by an examiner and maintaining that position + mutism: no, or very little, verbal response (exclude if known aphasia) + negativism: opposition or no response to instructions or external stimuli + posturing: spontaneous and active maintenance of a posture against gravity + mannerisms that are odd, circumstantial caricatures of normal actions + stereotypy: repetitive, abnormally frequent, non-goal-directed movements + agitation, not influenced by external stimuli + grimacing: keeping a fixed facial expression + echolalia: mimicking another's speech + echopraxia: mimicking another's movements. + +Other disorders (additional code 293.89 [F06.1] to indicate the presence of the co-morbid catatonia): + Catatonia associated with autism spectrum disorder + Catatonia associated with schizophrenia spectrum and other psychotic disorders + Catatonia associated with brief psychotic disorder + Catatonia associated with schizophreniform disorder + Catatonia associated with schizoaffective disorder + Catatonia associated with a substance-induced psychotic disorder + Catatonia associated with bipolar and related disorders + Catatonia associated with major depressive disorder + Catatonic disorder due to another medical condition + +If catatonic symptoms are present but do not form the catatonic syndrome, a medication- or substance-induced aetiology should first be considered. + +ICD-11 classification + +In ICD-11 catatonia is defined as a syndrome of primarily psychomotor disturbances that is characterized by the simultaneous occurrence of several symptoms such as stupor; catalepsy; waxy flexibility; mutism; negativism; posturing; mannerisms; stereotypies; psychomotor agitation; grimacing; echolalia and echopraxia. Catatonia may occur in the context of specific mental disorders, including mood disorders, schizophrenia or other primary psychotic disorders, and Neurodevelopmental disorders, and may be induced by psychoactive substances, including medications. Catatonia may also be caused by a medical condition not classified under mental, behavioral, or neurodevelopmental disorders. + +Assessment/Physical +Catatonia is often overlooked and under-diagnosed. Patients with catatonia most commonly have an underlying psychiatric disorder, for this reason, physicians may overlook signs of catatonia due to the severity of the psychosis the patient is presenting with. Furthermore, the patient may not be presenting with the common signs of catatonia such as mutism and posturing. Additionally, the motor abnormalities seen in catatonia are also present in psychiatric disorders. For example, a patient with mania will show increased motor activity that may progress to exciting catatonia. One way in which physicians can differentiate between the two is to observe the motor abnormality. Patients with mania present with increased goal-directed activity. On the other hand, the increased activity in catatonia is not goal-directed and often repetitive. + +Catatonia is a clinical diagnosis and there is no specific laboratory test to diagnose it. However, certain testing can help determine what is causing the catatonia. An EEG will likely show diffuse slowing. If seizure activity is driving the syndrome, then an EEG would also be helpful in detecting this. CT or MRI will not show catatonia; however, they might reveal abnormalities that might be leading to the syndrome. Metabolic screens, inflammatory markers, or autoantibodies may reveal reversible medical causes of catatonia. + +Vital signs should be frequently monitored as catatonia can progress to malignant catatonia which is life-threatening. Malignant catatonia is characterized by fever, hypertension, tachycardia, and tachypnea. + +Rating scale +Various rating scales for catatonia have been developed, however, their utility for clinical care has not been well established. The most commonly used scale is the Bush-Francis Catatonia Rating Scale (BFCRS) (external link is provided below). The scale is composed of 23 items with the first 14 items being used as the screening tool. If 2 of the 14 are positive, this prompts for further evaluation and completion of the remaining 9 items. + +A diagnosis can be supported by the lorazepam challenge or the zolpidem challenge. While proven useful in the past, barbiturates are no longer commonly used in psychiatry; thus the option of either benzodiazepines or ECT. + +Differential diagnosis +The differential diagnosis of catatonia is extensive as signs and symptoms of catatonia may overlap significantly with those of other conditions. Therefore, a careful and detailed history, medication review, and physical exam are key to diagnosing catatonia and differentiating it from other conditions. Furthermore, some of these conditions can themselves lead to catatonia. The differential diagnosis is as follows: + Neuroleptic malignant syndrome (NMS) and catatonia are both life-threatening conditions that share many of the same characteristics including fever, autonomic instability, rigidity, and delirium. Lab values of low serum iron, elevated creatine kinase, and white blood cell count are also shared by the two disorders further complicating the diagnosis. There are features of malignant catatonia (posturing, impulsivity, etc.) that are absent from NMS and the lab results are not as consistent in malignant catatonia as they are in NMS. Some experts consider NMS to be a drug-induced condition associated with antipsychotics, particularly, first generation antipsychotics, but it has not been established as a subtype. Therefore, discontinuing antipsychotics and starting benzodiazepines is a treatment for this condition, and similarly it is helpful in catatonia as well. + Anti-NMDA receptor encephalitis is an autoimmune disorder characterized by neuropsychiatric features and the presence of IgG antibodies. The presentation of anti-NMDAR encephalitis has been categorized into 5 phases: prodromal phase, psychotic phase, unresponsive phase, hyperkinetic phase, and recovery phase. The psychotic phase progresses into the unresponsive phase characterized by mutism, decreased motor activity, and catatonia. + Both serotonin syndrome and malignant catatonia may present with signs and symptoms of delirium, autonomic instability, hyperthermia, and rigidity. Again, similar to the presentation in NSM. However, patients with Serotonin syndrome have a history of ingestion of serotonergic drugs (Ex: SSRI). These patients will also present with hyperreflexia, myoclonus, nausea, vomiting, and diarrhea. + Malignant hyperthermia and malignant catatonia share features of autonomic instability, hyperthermia, and rigidity. However, malignant hyperthermia is a hereditary disorder of skeletal muscle that makes these patients susceptible to exposure to halogenated anesthetics and/or depolarizing muscle relaxants like succinylcholine. Malignant hyperthermia most commonly occurs in the intraoperative or postoperative periods. Other signs and symptoms of malignant hyperthermia include metabolic and respiratory acidosis, hyperkalemia, and cardiac arrhythmias. + Akinetic mutism is a neurological disorder characterized by a decrease in goal-directed behavior and motivation; however, the patient has an intact level of consciousness. Patients may present with apathy, and may seem indifferent to pain, hunger, or thirst. Akinetic mutism has been associated with structural damage in a variety of brain areas. Akinetic mutism and catatonia may both manifest with immobility, mutism, and waxy flexibility. Differentiating both disorders is the fact that akinetic mutism does not present with echolalia, echopraxia, or posturing. Furthermore, it is not responsive to benzodiazepines as is the case for catatonia. + Elective mutism has an anxious etiology but has also been associated with personality disorders. Patients with this disorder fail to speak with some individuals but will speak with others. Likewise, they may refuse to speak in certain situations; for example, a child who refuses to speak at school but is conversational at home. This disorder is distinguished from catatonia by the absence of any other signs/symptoms. + Nonconvulsive status epilepticus is seizure activity with no accompanying tonic-clonic movements. It can present with stupor, similar to catatonia, and they both respond to benzodiazepines. Nonconvulsive status epilepticus is diagnosed by the presence of seizure activity seen on electroencephalogram (EEG). Catatonia on the other hand, is associated with normal EEG or diffuse slowing. + Delirium is characterized by fluctuating disturbed perception and consciousness in the ill individual. It has hypoactive and hyperactive or mixed forms. People with hyperactive delirium present similarly to those with excited catatonia and have symptoms of restlessness, agitation, and aggression. Those with hypoactive delirium present with similarly to retarded catatonia, withdrawn and quiet. However, catatonia also includes other distinguishing features including posturing and rigidity as well as a positive response to benzodiazepines. + Patients with locked-in syndrome present with immobility and mutism; however, unlike patients with catatonia who are unmotivated to communicate, patients with locked-in syndrome try to communicate with eye movements and blinking. Furthermore, locked-in syndrome is caused by damage to the brainstem. + Stiff-person syndrome and catatonia are similar in that they may both present with rigidity, autonomic instability and a positive response to benzodiazepines. However, stiff-person syndrome may be associated with anti-glutamic acid decarboxylase (anti-GAD) antibodies and other catatonic signs such as mutism and posturing are not part of the syndrome. + Untreated late-stage Parkinson's disease may present similarly to retarded catatonia with symptoms of immobility, rigidity, and difficulty speaking. Further complicating the diagnosis is the fact that many patients with Parkinson's disease will have major depressive disorder, which may be the underlying cause of catatonia. Parkinson's disease can be distinguished from catatonia by a positive response to levodopa. Catatonia on the other hand will show a positive response to benzodiazepines. + Extrapyramidal side effects of antipsychotic medication, especially dystonia and akathisia, can be difficult to distinguish from catatonic symptoms, or may confound them in the psychiatric setting. Extrapyramidal motor disorders usually do not involve social symptoms like negativism, while individuals with catatonic excitement typically do not have the physically painful compulsion to move that is seen in akathisia. + Certain stimming behaviors and stress responses in individuals with autism spectrum disorders can present similarly to catatonia. In autism spectrum disorders, chronic catatonia is distinguished by a lasting deterioration of adaptive skills from the background of pre-existing autistic symptomatology that cannot be easily explained. Acute catatonia is usually clearly distinguishable from autistic symptoms. + The diagnostic entities of obsessional slowness and psychogenic parkinsonism show overlapping features with catatonia, such as motor slowness, gegenhalten (oppositional paratonia), mannerisms, and reduced or absent speech. However, psychogenic parkinsonism involves tremor which is unusual in catatonia. Obsessional slowness is a controversial diagnosis, with presentations ranging from severe but common manifestations of obsessive compulsive disorder to catatonia. + Down Syndrome Disintegrative Disorder (or Down Syndrome Regression Disorder, DSDD / DSRD) is a chronic condition characterized by loss of previously acquired adaptive, cognitive and social functioning occurring in persons with Down Syndrome, usually during adolescence or early adulthood. The clinical picture is variable, but often includes catatonic signs, which is why it was called "catatonic psychosis" in initial reports in 1946. DSDD seems to phenotypically overlap with obsessional slowness (see above) and catatonia-like regression occurring in ASD. + +Treatment +The initial treatment of catatonia is to stop medication that could be potentially leading to the syndrome. These may include steroids, stimulants, anticonvulsants, neuroleptics, dopamine blockers, etc. The next step is to provide a "lorazepam challenge," in which patients are given 2 mg of IV lorazepam (or another benzodiazepine). Most patients with catatonia will respond significantly to this within the first 15–30 minutes. If no change is observed during the first dose, then a second dose is given and the patient is re-examined. If the patient responds to the lorazepam challenge, then lorazepam can be scheduled at interval doses until the catatonia resolves. The lorazepam must be tapered slowly, otherwise, the catatonia symptoms may return. The underlying cause of the catatonia should also be treated during this time. If within a week the catatonia is not resolved, then ECT can be used to reverse the symptoms. ECT in combination with benzodiazepines is used to treat malignant catatonia. In France, zolpidem has also been used in diagnosis, and response may occur within the same time period. Ultimately the underlying cause needs to be treated. + +Electroconvulsive therapy (ECT) is an effective treatment for catatonia that is well acknowledged. ECT has also shown favorable outcomes in patients with chronic catatonia. However, it has been pointed out that further high quality randomized controlled trials are needed to evaluate the efficacy, tolerance, and protocols of ECT in catatonia. + +Antipsychotics should be used with care as they can worsen catatonia and are the cause of neuroleptic malignant syndrome, a dangerous condition that can mimic catatonia and requires immediate discontinuation of the antipsychotic. + +There is evidence clozapine works better than other antipsychotics to treat catatonia, following a recent systematic review. + +Excessive glutamate activity is believed to be involved in catatonia; when first-line treatment options fail, NMDA antagonists such as amantadine or memantine may be used. Amantadine may have an increased incidence of tolerance with prolonged use and can cause psychosis, due to its additional effects on the dopamine system. Memantine has a more targeted pharmacological profile for the glutamate system, reduced incidence of psychosis and may therefore be preferred for individuals who cannot tolerate amantadine. Topiramate is another treatment option for resistant catatonia; it produces its therapeutic effects by producing glutamate antagonism via modulation of AMPA receptors. + +Prognosis +Patients who experience an episode of catatonia are more likely to experience another recurring episode. Treatment response for patients with catatonia is 50–70% and these patients have a good prognosis. However, failure to respond to medication is a very poor prognosis. Many of these patients will require long-term and continuous mental health care. For patients with catatonia with underlying schizophrenia, the prognosis is much poorer. + +Epidemiology +Catatonia has been mostly studied in acutely ill psychiatric patients. Catatonia frequently goes unrecognized, leading to the belief that the syndrome is rare; however, this is not true and prevalence has been reported to be as high as 10% in patients with acute psychiatric illnesses. One large population estimate has suggested that the incidence of catatonia is 10.6 episodes per 100 000 person-years. It occurs in males and females in approximately equal numbers. 21-46% of all catatonia cases can be attributed to a general medical condition. + +History +Reports of stupor-like and catatonia-like states abound in the history of psychiatry. After the middle of the 19th century there was an increase of interest in the motor disorders accompanying madness, culminating in the publication by Karl Ludwig Kahlbaum in 1874 of (Catatonia or Tension Insanity). + +See also + + Akinetic mutism + Autistic catatonia + Awakenings (1990 biopic about catatonic patients, based on Oliver Sacks's book of the same name) + Blank expression + Botulism + Disorganized schizophrenia + Homecoming (features catatonia as a main plot point) + Karolina Olsson + Oneiroid syndrome + Paranoid schizophrenia + Persistent vegetative state + Resignation syndrome + Sensory overload + Tonic immobility + Sleep paralysis + +References + +External links + Catatonia in DSM-5 + Encyclopedia of Mental Disorders – Catatonic Disorders + "Schizophrenia: Catatonic Type" video by Heinz Edgar Lehmann, 1952 + Bush-Francis Catatonia Rating Scale + +Mood disorders +Schizophrenia +Psychopathological syndromes +In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment. To encipher or encode is to convert information into cipher or code. In common parlance, "cipher" is synonymous with "code", as they are both a set of steps that encrypt a message; however, the concepts are distinct in cryptography, especially classical cryptography. + +Codes generally substitute different length strings of characters in the output, while ciphers generally substitute the same number of characters as are input. A code maps one meaning with another. Words and phrases can be coded as letters or numbers. Codes typically have direct meaning from input to key. Codes primarily function to save time. Ciphers are algorithmic. The given input must follow the cipher's process to be solved. Ciphers are commonly used to encrypt written information. + +Codes operated by substituting according to a large codebook which linked a random string of characters or numbers to a word or phrase. For example, "UQJHSE" could be the code for "Proceed to the following coordinates." When using a cipher the original information is known as plaintext, and the encrypted form as ciphertext. The ciphertext message contains all the information of the plaintext message, but is not in a format readable by a human or computer without the proper mechanism to decrypt it. + +The operation of a cipher usually depends on a piece of auxiliary information, called a key (or, in traditional NSA parlance, a cryptovariable). The encrypting procedure is varied depending on the key, which changes the detailed operation of the algorithm. A key must be selected before using a cipher to encrypt a message. Without knowledge of the key, it should be extremely difficult, if not impossible, to decrypt the resulting ciphertext into readable plaintext. + +Most modern ciphers can be categorized in several ways + By whether they work on blocks of symbols usually of a fixed size (block ciphers), or on a continuous stream of symbols (stream ciphers). + By whether the same key is used for both encryption and decryption (symmetric key algorithms), or if a different key is used for each (asymmetric key algorithms). If the algorithm is symmetric, the key must be known to the recipient and sender and to no one else. If the algorithm is an asymmetric one, the enciphering key is different from, but closely related to, the deciphering key. If one key cannot be deduced from the other, the asymmetric key algorithm has the public/private key property and one of the keys may be made public without loss of confidentiality. + +Etymology +Originating from the Arabic word for zero صفر (sifr), the word "cipher" spread to Europe as part of the Arabic numeral system during the Middle Ages. The Roman numeral system lacked the concept of zero, and this limited advances in mathematics. In this transition, the word was adopted into Medieval Latin as cifra, and then into Middle French as cifre. This eventually led to the English word cipher (minority spelling cypher). One theory for how the term came to refer to encoding is that the concept of zero was confusing to Europeans, and so the term came to refer to a message or communication that was not easily understood. + +The term cipher was later also used to refer to any Arabic digit, or to calculation using them, so encoding text in the form of Arabic numerals is literally converting the text to "ciphers". + +Versus codes + +In casual contexts, "code" and "cipher" can typically be used interchangeably, however, the technical usages of the words refer to different concepts. Codes contain meaning; words and phrases are assigned to numbers or symbols, creating a shorter message. + +An example of this is the commercial telegraph code which was used to shorten long telegraph messages which resulted from entering into commercial contracts using exchanges of telegrams. + +Another example is given by whole word ciphers, which allow the user to replace an entire word with a symbol or character, much like the way written Japanese utilizes Kanji (meaning Chinese characters in Japanese) characters to supplement the native Japanese characters representing syllables. An example using English language with Kanji could be to replace "The quick brown fox jumps over the lazy dog" by "The quick brown 狐 jumps 上 the lazy 犬". Stenographers sometimes use specific symbols to abbreviate whole words. + +Ciphers, on the other hand, work at a lower level: the level of individual letters, small groups of letters, or, in modern schemes, individual bits and blocks of bits. Some systems used both codes and ciphers in one system, using superencipherment to increase the security. In some cases the terms codes and ciphers are used synonymously with substitution and transposition, respectively. + +Historically, cryptography was split into a dichotomy of codes and ciphers, while coding had its own terminology analogous to that of ciphers: "encoding, codetext, decoding" and so on. + +However, codes have a variety of drawbacks, including susceptibility to cryptanalysis and the difficulty of managing a cumbersome codebook. Because of this, codes have fallen into disuse in modern cryptography, and ciphers are the dominant technique. + +Types +There are a variety of different types of encryption. Algorithms used earlier in the history of cryptography are substantially different from modern methods, and modern ciphers can be classified according to how they operate and whether they use one or two keys. + +Historical + +The Caesar Cipher is one of the earliest known cryptographic systems. Julius Caesar used a cipher that shifts the letters in the alphabet in place by three and wrapping the remaining letters to the front to write to Marcus Tullius Cicero in approximately 50 BC.[11] + +Historical pen and paper ciphers used in the past are sometimes known as classical ciphers. They include simple substitution ciphers (such as ROT13) and transposition ciphers (such as a Rail Fence Cipher). For example, "GOOD DOG" can be encrypted as "PLLX XLP" where "L" substitutes for "O", "P" for "G", and "X" for "D" in the message. Transposition of the letters "GOOD DOG" can result in "DGOGDOO". These simple ciphers and examples are easy to crack, even without plaintext-ciphertext pairs. + +William Shakespeare often used the concept of ciphers in his writing to symbolize nothingness. In Shakespeare's Henry V, he relates one of the accounting methods that brought the Arabic Numeral system and zero to Europe, to the human imagination. The actors who perform this play were not at the battles of Henry V's reign, so they represent absence. In another sense, ciphers are important to people who work with numbers, but they do not hold value. Shakespeare used this concept to outline how those who counted and identified the dead from the battles used that information as a political weapon, furthering class biases and xenophobia. + +In the 1640s, the Parliamentarian commander, Edward Montagu, 2nd Earl of Manchester, developed ciphers to send coded messages to his allies during the English Civil War. + +Simple ciphers were replaced by polyalphabetic substitution ciphers (such as the Vigenère) which changed the substitution alphabet for every letter. For example, "GOOD DOG" can be encrypted as "PLSX TWF" where "L", "S", and "W" substitute for "O". With even a small amount of known or estimated plaintext, simple polyalphabetic substitution ciphers and letter transposition ciphers designed for pen and paper encryption are easy to crack. It is possible to create a secure pen and paper cipher based on a one-time pad though, but the usual disadvantages of one-time pads apply. + +During the early twentieth century, electro-mechanical machines were invented to do encryption and decryption using transposition, polyalphabetic substitution, and a kind of "additive" substitution. In rotor machines, several rotor disks provided polyalphabetic substitution, while plug boards provided another substitution. Keys were easily changed by changing the rotor disks and the plugboard wires. Although these encryption methods were more complex than previous schemes and required machines to encrypt and decrypt, other machines such as the British Bombe were invented to crack these encryption methods. + +Modern +Modern encryption methods can be divided by two criteria: by type of key used, and by type of input data. + +By type of key used ciphers are divided into: + symmetric key algorithms (Private-key cryptography), where one same key is used for encryption and decryption, and + asymmetric key algorithms (Public-key cryptography), where two different keys are used for encryption and decryption. + +In a symmetric key algorithm (e.g., DES and AES), the sender and receiver must have a shared key set up in advance and kept secret from all other parties; the sender uses this key for encryption, and the receiver uses the same key for decryption. The design of AES (Advanced Encryption System) was beneficial because it aimed to overcome the flaws in the design of the DES (Data encryption standard). AES's designer's claim that the common means of modern cipher cryptanalytic attacks are ineffective against AES due to its design structure.[12] + +Ciphers can be distinguished into two types by the type of input data: + block ciphers, which encrypt block of data of fixed size, and + stream ciphers, which encrypt continuous streams of data. + +Key size and vulnerability +In a pure mathematical attack, (i.e., lacking any other information to help break a cipher) two factors above all count: + + Computational power available, i.e., the computing power which can be brought to bear on the problem. It is important to note that average performance/capacity of a single computer is not the only factor to consider. An adversary can use multiple computers at once, for instance, to increase the speed of exhaustive search for a key (i.e., "brute force" attack) substantially. + Key size, i.e., the size of key used to encrypt a message. As the key size increases, so does the complexity of exhaustive search to the point where it becomes impractical to crack encryption directly. +Since the desired effect is computational difficulty, in theory one would choose an algorithm and desired difficulty level, thus decide the key length accordingly. + +An example of this process can be found at Key Length which uses multiple reports to suggest that a symmetrical cipher with 128 bits, an asymmetric cipher with 3072 bit keys, and an elliptic curve cipher with 256 bits, all have similar difficulty at present. + +Claude Shannon proved, using information theory considerations, that any theoretically unbreakable cipher must have keys which are at least as long as the plaintext, and used only once: one-time pad. + +See also + Autokey cipher + Cover-coding + Encryption software + List of ciphertexts + Steganography + Telegraph code + +Notes + +References + Richard J. Aldrich, GCHQ: The Uncensored Story of Britain's Most Secret Intelligence Agency, HarperCollins July 2010. + Helen Fouché Gaines, "Cryptanalysis", 1939, Dover. + Ibrahim A. Al-Kadi, "The origins of cryptology: The Arab contributions", Cryptologia, 16(2) (April 1992) pp. 97–126. + David Kahn, The Codebreakers - The Story of Secret Writing () (1967) + David A. King, The ciphers of the monks - A forgotten number notation of the Middle Ages, Stuttgart: Franz Steiner, 2001 () + Abraham Sinkov, Elementary Cryptanalysis: A Mathematical Approach, Mathematical Association of America, 1966. + William Stallings, ''Cryptography and Network Security, principles and practices, 4th Edition + + "Ciphers vs. Codes (Article) | Cryptography." Khan Academy, Khan Academy, https://www.khanacademy.org/computing/computer-science/cryptography/ciphers/a/ciphers-vs-codes. + Caldwell, William Casey. "Shakespeare's Henry V and the Ciphers of History." SEL Studies in English Literature, 1500-1900, vol. 61, no. 2, 2021, pp. 241–68. EBSCOhost, . + Luciano, Dennis, and Gordon Prichett. "Cryptology: From Caesar Ciphers to Public-Key Cryptosystems." The College Mathematics Journal, vol. 18, no. 1, 1987, pp. 2–17. JSTOR, https://doi.org/10.2307/2686311. Accessed 19 Feb. 2023. + Ho Yean Li, et al. "Heuristic Cryptanalysis of Classical and Modern Ciphers." 2005 13th IEEE International Conference on Networks Jointly Held with the 2005 IEEE 7th Malaysia International Conf on Communic, Networks, 2005. Jointly Held with the 2005 IEEE 7th Malaysia International Conference on Communication., 2005 13th IEEE International Conference on, Networks and Communications, vol. 2, Jan. 2005. EBSCOhost, . + +External links + + Kish cypher + +Cryptography +Country (also called country and western) is a music genre originating in the Southern and Southwestern United States. First produced in the 1920s, country music primarily focuses on working class Americans and blue-collar American life. + +Country music is known for its ballads and dance tunes (also known as "honky-tonk music") with simple form, folk lyrics, and harmonies generally accompanied by instruments such as banjos, fiddles, harmonicas, and many types of guitar (including acoustic, electric, steel, and resonator guitars). Though it is primarily rooted in various forms of American folk music, such as old-time music and Appalachian music, many other traditions, including African-American, Mexican, Irish, and Hawaiian music, have also had a formative influence on the genre. Blues modes have been used extensively throughout its history as well. + +The term country music gained popularity in the 1940s in preference to hillbilly music; it came to encompass western music, which evolved parallel to hillbilly music from similar roots, in the mid-20th century. Contemporary styles of western music include Texas country, red dirt, and Hispano- and Mexican American-led Tejano and New Mexico music, all extant alongside longstanding indigenous traditions. + +In 2009, in the United States, country music was the most listened to rush hour radio genre during the evening commute, and second most popular in the morning commute. + +Origins + +The main components of the modern country music style date back to music traditions throughout the Southern United States and Southwestern United States, while its place in American popular music was established in the 1920s during the early days of music recording. According to country historian Bill C. Malone, country music was "introduced to the world as a Southern phenomenon." + +Migration into the southern Appalachian Mountains, of the Southeastern United States, brought the folk music and instruments of Europe, Africa, and the Mediterranean Basin along with it for nearly 300 years, which developed into Appalachian music. As the country expanded westward, the Mississippi River and Louisiana became a crossroads for country music, giving rise to Cajun music. In the Southwestern United States, it was the Rocky Mountains, American frontier, and Rio Grande that acted as a similar backdrop for Native American, Mexican, and cowboy ballads, which resulted in New Mexico music and the development of western music, and its directly related Red Dirt, Texas country, and Tejano music styles. In the Asia-Pacific, the steel guitar sound of country music has its provenance in the music of Hawaii. + +Role of East Tennessee + +The U.S. Congress has formally recognized Bristol, Tennessee as the "Birthplace of Country Music", based on the historic Bristol recording sessions of 1927. Since 2014, the city has been home to the Birthplace of Country Music Museum. Historians have also noted the influence of the less-known Johnson City sessions of 1928 and 1929, and the Knoxville sessions of 1929 and 1930. In addition, the Mountain City Fiddlers Convention, held in 1925, helped to inspire modern country music. Before these, pioneer settlers, in the Great Smoky Mountains region, had developed a rich musical heritage. + +Generations +The first generation emerged in the 1920s, with Atlanta's music scene playing a major role in launching country's earliest recording artists. James Gideon "Gid" Tanner (1885–1960) was an American old-time fiddler and one of the earliest stars of what would come to be known as country music. His band, the Skillet Lickers, was one of the most innovative and influential string bands of the 1920s and 1930s. Its most notable members were Clayton McMichen (fiddle and vocal), Dan Hornsby (vocals), Riley Puckett (guitar and vocal) and Robert Lee Sweat (guitar). New York City record label Okeh Records began issuing hillbilly music records by Fiddlin' John Carson as early as 1923, followed by Columbia Records (series 15000D "Old Familiar Tunes") (Samantha Bumgarner) in 1924, and RCA Victor Records in 1927 with the first famous pioneers of the genre Jimmie Rodgers, who is widely considered the "Father of Country Music", and the first family of country music the Carter Family. Many "hillbilly" musicians recorded blues songs throughout the 1920s. + +During the second generation (1930s–1940s), radio became a popular source of entertainment, and "barn dance" shows featuring country music were started all over the South, as far north as Chicago, and as far west as California. The most important was the Grand Ole Opry, aired starting in 1925 by WSM in Nashville and continuing to the present day. During the 1930s and 1940s, cowboy songs, or western music, which had been recorded since the 1920s, were popularized by films made in Hollywood, many featuring Gene Autry, who was known as king of the "singing cowboys", and Hank Williams. Bob Wills was another country musician from the Lower Great Plains who had become very popular as the leader of a "hot string band," and who also appeared in Hollywood westerns. His mix of country and jazz, which started out as dance hall music, would become known as western swing. Wills was one of the first country musicians known to have added an electric guitar to his band, in 1938. Country musicians began recording boogie in 1939, shortly after it had been played at Carnegie Hall, when Johnny Barfield recorded "Boogie Woogie". + +The third generation (1950s–1960s) started at the end of World War II with "mountaineer" string band music known as bluegrass, which emerged when Bill Monroe, along with Lester Flatt and Earl Scruggs were introduced by Roy Acuff at the Grand Ole Opry. Gospel music remained a popular component of country music. The Native American, Hispano, and American frontier music of the Southwestern United States and Northern Mexico, became popular among poor communities in New Mexico, Oklahoma, and Texas; the basic ensemble consisted of classical guitar, bass guitar, dobro or steel guitar, though some larger ensembles featured electric guitars, trumpets, keyboards (especially the honky-tonk piano, a type of tack piano), banjos, and drums. By the early 1950s it blended with rock and roll, becoming the rockabilly sound produced by Sam Phillips, Norman Petty, and Bob Keane. Musicians like Elvis Presley, Bo Diddley, Buddy Holly, Jerry Lee Lewis, Ritchie Valens, Carl Perkins, Roy Orbison, and Johnny Cash emerged as enduring representatives of the style. Beginning in the mid-1950s, and reaching its peak during the early 1960s, the Nashville sound turned country music into a multimillion-dollar industry centered in Nashville, Tennessee; Patsy Cline and Jim Reeves were two of the most broadly popular Nashville sound artists, and their deaths in separate plane crashes in the early 1960s were a factor in the genre's decline. Starting in the 1950s to the mid-1960s, western singer-songwriters such as Michael Martin Murphey and Marty Robbins rose in prominence as did others, throughout western music traditions, like New Mexico music's Al Hurricane. The late 1960s in American music produced a unique blend as a result of traditionalist backlash within separate genres. In the aftermath of the British Invasion, many desired a return to the "old values" of rock n' roll. At the same time there was a lack of enthusiasm in the country sector for Nashville-produced music. What resulted was a crossbred genre known as country rock. + +Fourth generation (1970s–1980s) music included outlaw country with roots in the Bakersfield sound, and country pop with roots in the countrypolitan, folk music and soft rock. Between 1972 and 1975 singer/guitarist John Denver released a series of hugely successful songs blending country and folk-rock musical styles. By the mid-1970s, Texas country and Tejano music gained popularity with performers like Freddie Fender. During the early 1980s country artists continued to see their records perform well on the pop charts. In 1980 a style of "neocountry disco music" was popularized. During the mid-1980s a group of new artists began to emerge who rejected the more polished country-pop sound that had been prominent on radio and the charts in favor of more traditional "back-to-basics" production. + +During the fifth generation (1990s), neotraditionalists and stadium country acts prospered. + +The sixth generation (2000s–present) has seen a certain amount of diversification in regard to country music styles. It has also, however, seen a shift into patriotism and conservative politics since 9/11, though such themes are less prevalent in more modern trends. The influence of rock music in country has become more overt during the late 2000s and early 2010s. Most of the best-selling country songs of this era were those by Lady A, Florida Georgia Line, Carrie Underwood, and Taylor Swift. Hip hop also made its mark on country music with the emergence of country rap. + +History + +First generation (1920s) + +The first commercial recordings of what was considered instrumental music in the traditional country style were "Arkansas Traveler" and "Turkey in the Straw" by fiddlers Henry Gilliland & A.C. (Eck) Robertson on June 30, 1922, for Victor Records and released in April 1923. Columbia Records began issuing records with "hillbilly" music (series 15000D "Old Familiar Tunes") as early as 1924. + +The first commercial recording of what is widely considered to be the first country song featuring vocals and lyrics was Fiddlin' John Carson with "Little Log Cabin in the Lane" for Okeh Records on June 14, 1923. + +Vernon Dalhart was the first country singer to have a nationwide hit in May 1924 with "Wreck of the Old 97". The flip side of the record was "Lonesome Road Blues", which also became very popular. In April 1924, "Aunt" Samantha Bumgarner and Eva Davis became the first female musicians to record and release country songs. Many of the early country musicians, such as the yodeler Cliff Carlisle, recorded blues songs into the 1930s. Other important early recording artists were Riley Puckett, Don Richardson, Fiddlin' John Carson, Uncle Dave Macon, Al Hopkins, Ernest V. Stoneman, Blind Alfred Reed, Charlie Poole and the North Carolina Ramblers and the Skillet Lickers. The steel guitar entered country music as early as 1922, when Jimmie Tarlton met famed Hawaiian guitarist Frank Ferera on the West Coast. + +Jimmie Rodgers and the Carter Family are widely considered to be important early country musicians. From Scott County, Virginia, the Carters had learned sight reading of hymnals and sheet music using solfege. Their songs were first captured at a historic recording session in Bristol, Tennessee, on August 1, 1927, where Ralph Peer was the talent scout and sound recordist. A scene in the movie O Brother, Where Art Thou? depicts a similar occurrence in the same timeframe. + +Rodgers fused hillbilly country, gospel, jazz, blues, pop, cowboy, and folk, and many of his best songs were his compositions, including "Blue Yodel", which sold over a million records and established Rodgers as the premier singer of early country music. Beginning in 1927, and for the next 17 years, the Carters recorded some 300 old-time ballads, traditional tunes, country songs and gospel hymns, all representative of America's southeastern folklore and heritage. Maybelle Carter went on to continue the family tradition with her daughters as The Carter Sisters; her daughter June would marry (in succession) Carl Smith, Rip Nix and Johnny Cash, having children with each who would also become country singers. + +Second generation (1930s–1940s) + +Record sales declined during the Great Depression, but radio became a popular source of entertainment, and "barn dance" shows featuring country music were started by radio stations all over the South, as far north as Chicago, and as far west as California. + +The most important was the Grand Ole Opry, aired starting in 1925 by WSM in Nashville and continuing to the present day. Some of the early stars on the Opry were Uncle Dave Macon, Roy Acuff and African American harmonica player DeFord Bailey. WSM's 50,000-watt signal (in 1934) could often be heard across the country. Many musicians performed and recorded songs in any number of styles. Moon Mullican, for example, played western swing but also recorded songs that can be called rockabilly. Between 1947 and 1949, country crooner Eddy Arnold placed eight songs in the top 10. From 1945 to 1955 Jenny Lou Carson was one of the most prolific songwriters in country music. + +Singing cowboys and western swing + +In the 1930s and 1940s, cowboy songs, or western music, which had been recorded since the 1920s, were popularized by films made in Hollywood. Some of the popular singing cowboys from the era were Gene Autry, the Sons of the Pioneers, and Roy Rogers. Country music and western music were frequently played together on the same radio stations, hence the term country and western music, despite country and western being two distinct genres. + +Cowgirls contributed to the sound in various family groups. Patsy Montana opened the door for female artists with her history-making song "I Want To Be a Cowboy's Sweetheart". This would begin a movement toward opportunities for women to have successful solo careers. Bob Wills was another country musician from the Lower Great Plains who had become very popular as the leader of a "hot string band," and who also appeared in Hollywood westerns. His mix of country and jazz, which started out as dance hall music, would become known as western swing. Cliff Bruner, Moon Mullican, Milton Brown and Adolph Hofner were other early western swing pioneers. Spade Cooley and Tex Williams also had very popular bands and appeared in films. At its height, western swing rivaled the popularity of big band swing music. + +Changing instrumentation +Drums were scorned by early country musicians as being "too loud" and "not pure", but by 1935 western swing big band leader Bob Wills had added drums to the Texas Playboys. In the mid-1940s, the Grand Ole Opry did not want the Playboys' drummer to appear on stage. Although drums were commonly used by rockabilly groups by 1955, the less-conservative-than-the-Grand-Ole-Opry Louisiana Hayride kept its infrequently used drummer back stage as late as 1956. By the early 1960s, however, it was rare for a country band not to have a drummer. Bob Wills was one of the first country musicians known to have added an electric guitar to his band, in 1938. A decade later (1948) Arthur Smith achieved top 10 US country chart success with his MGM Records recording of "Guitar Boogie", which crossed over to the US pop chart, introducing many people to the potential of the electric guitar. For several decades Nashville session players preferred the warm tones of the Gibson and Gretsch archtop electrics, but a "hot" Fender style, using guitars which became available beginning in the early 1950s, eventually prevailed as the signature guitar sound of country. + +Hillbilly boogie +Country musicians began recording boogie in 1939, shortly after it had been played at Carnegie Hall, when Johnny Barfield recorded "Boogie Woogie". The trickle of what was initially called hillbilly boogie, or okie boogie (later to be renamed country boogie), became a flood beginning in late 1945. One notable release from this period was the Delmore Brothers' "Freight Train Boogie", considered to be part of the combined evolution of country music and blues towards rockabilly. In 1948, Arthur "Guitar Boogie" Smith achieved top ten US country chart success with his MGM Records recordings of "Guitar Boogie" and "Banjo Boogie", with the former crossing over to the US pop charts. Other country boogie artists included Moon Mullican, Merrill Moore and Tennessee Ernie Ford. The hillbilly boogie period lasted into the 1950s and remains one of many subgenres of country into the 21st century. + +Bluegrass, folk and gospel + +By the end of World War II, "mountaineer" string band music known as bluegrass had emerged when Bill Monroe joined with Lester Flatt and Earl Scruggs, introduced by Roy Acuff at the Grand Ole Opry. That was the ordination of bluegrass music and how Bill Monroe came to be known as the "Father of Bluegrass." Gospel music, too, remained a popular component of bluegrass and other sorts of country music. Red Foley, the biggest country star following World War II, had one of the first million-selling gospel hits ("Peace in the Valley") and also sang boogie, blues and rockabilly. In the post-war period, country music was called "folk" in the trades, and "hillbilly" within the industry. In 1944, Billboard replaced the term "hillbilly" with "folk songs and blues," and switched to "country and western" in 1949. + +Honky tonk + +Another type of stripped down and raw music with a variety of moods and a basic ensemble of guitar, bass, dobro or steel guitar (and later) drums became popular, especially among rural residents in the three states of Texhomex, those being Texas, Oklahoma, and New Mexico. It became known as honky tonk and had its roots in western swing and the ranchera music of Mexico and the border states, particularly New Mexico and Texas, together with the blues of the American South. Bob Wills and His Texas Playboys personified this music which has been described as "a little bit of this, and a little bit of that, a little bit of black and a little bit of white ... just loud enough to keep you from thinking too much and to go right on ordering the whiskey." East Texan Al Dexter had a hit with "Honky Tonk Blues", and seven years later "Pistol Packin' Mama". These "honky tonk" songs were associated with barrooms, and was performed by the likes of Ernest Tubb, Kitty Wells (the first major female country solo singer), Ted Daffan, Floyd Tillman, the Maddox Brothers and Rose, Lefty Frizzell and Hank Williams; the music of these artists would later be called "traditional" country. Williams' influence in particular would prove to be enormous, inspiring many of the pioneers of rock and roll, such as Elvis Presley, Jerry Lee Lewis, Chuck Berry and Ike Turner, while providing a framework for emerging honky tonk talents like George Jones. Webb Pierce was the top-charting country artist of the 1950s, with 13 of his singles spending 113 weeks at number one. He charted 48 singles during the decade; 31 reached the top ten and 26 reached the top four. + +Third generation (1950s–1960s) + +By the early 1950s, a blend of western swing, country boogie, and honky tonk was played by most country bands, a mixture which followed in the footsteps of Gene Autry, Lydia Mendoza, Roy Rogers, and Patsy Montana. Western music, influenced by the cowboy ballads, New Mexico, Texas country and Tejano music rhythms of the Southwestern United States and Northern Mexico, reached its peak in popularity in the late 1950s, most notably with the song "El Paso", first recorded by Marty Robbins in September 1959. Western music's influence would continue to grow within the country music sphere, western musicians like Michael Martin Murphey, New Mexico music artists Al Hurricane and Antonia Apodaca, Tejano music performer Little Joe, and even folk revivalist John Denver, all first rose to prominence during this time. This western music influence largely kept the music of the folk revival and folk rock from influencing the country music genre much, despite the similarity in instrumentation and origins (see, for instance, the Byrds' negative reception during their appearance on the Grand Ole Opry). The main concern was largely political: most folk revival was largely driven by progressive activists, a stark contrast to the culturally conservative audiences of country music. John Denver was perhaps the only musician to have major success in both the country and folk revival genres throughout his career, later only a handful of artists like Burl Ives and Canadian musician Gordon Lightfoot successfully made the crossover to country after folk revival fell out of fashion. During the mid-1950s a new style of country music became popular, eventually to be referred to as rockabilly. + +In 1953, the first all-country radio station was established in Lubbock, Texas. The music of the 1960s and 1970s targeted the American working class, and truckers in particular. As country radio became more popular, trucking songs like the 1963 hit song Six Days on the Road by Dave Dudley began to make up their own subgenre of country. These revamped songs sought to portray American truckers as a "new folk hero", marking a significant shift in sound from earlier country music. The song was written by actual truckers and contained numerous references to the trucker culture of the time like "ICC" for Interstate Commerce Commission and "little white pills" as a reference to amphetamines. Starday Records in Nashville followed up on Dudley's initial success with the release of Give Me 40 Acres by the Willis Brothers. + +Rockabilly + +Rockabilly was most popular with country fans in the 1950s; one of the first rock and roll superstars was former western yodeler Bill Haley, who repurposed his Four Aces of Western Swing into a rockabilly band in the early 1950s and renamed it the Comets. Bill Haley & His Comets are credited with two of the first successful rock and roll records, "Crazy Man, Crazy" of 1953 and "Rock Around the Clock" in 1954. + +1956 could be called the year of rockabilly in country music. Rockabilly was an early form of rock and roll, an upbeat combination of blues and country music. The number two, three and four songs on Billboard's charts for that year were Elvis Presley, "Heartbreak Hotel"; Johnny Cash, "I Walk the Line"; and Carl Perkins, "Blue Suede Shoes". Reflecting this success, George Jones released a rockabilly record that year under the pseudonym "Thumper Jones", wanting to capitalize on the popularity of rockabilly without alienating his traditional country base. Cash and Presley placed songs in the top 5 in 1958 with No. 3 "Guess Things Happen That Way/Come In, Stranger" by Cash, and No. 5 by Presley "Don't/I Beg of You." Presley acknowledged the influence of rhythm and blues artists and his style, saying "The colored folk been singin' and playin' it just the way I'm doin' it now, man for more years than I know." Within a few years, many rockabilly musicians returned to a more mainstream style or had defined their own unique style. + +Country music gained national television exposure through Ozark Jubilee on ABC-TV and radio from 1955 to 1960 from Springfield, Missouri. The program showcased top stars including several rockabilly artists, some from the Ozarks. As Webb Pierce put it in 1956, "Once upon a time, it was almost impossible to sell country music in a place like New York City. Nowadays, television takes us everywhere, and country music records and sheet music sell as well in large cities as anywhere else." + +The Country Music Association was founded in 1958, in part because numerous country musicians were appalled by the increased influence of rock and roll on country music. + +The Nashville and countrypolitan sounds + +Beginning in the mid-1950s, and reaching its peak during the early 1960s, the Nashville sound turned country music into a multimillion-dollar industry centered in Nashville, Tennessee. Under the direction of producers such as Chet Atkins, Bill Porter, Paul Cohen, Owen Bradley, Bob Ferguson, and later Billy Sherrill, the sound brought country music to a diverse audience and helped revive country as it emerged from a commercially fallow period. This subgenre was notable for borrowing from 1950s pop stylings: a prominent and smooth vocal, backed by a string section (violins and other orchestral strings) and vocal chorus. Instrumental soloing was de-emphasized in favor of trademark "licks". Leading artists in this genre included Jim Reeves, Skeeter Davis, Connie Smith, the Browns, Patsy Cline, and Eddy Arnold. The "slip note" piano style of session musician Floyd Cramer was an important component of this style. The Nashville Sound collapsed in mainstream popularity in 1964, a victim of both the British Invasion and the deaths of Reeves and Cline in separate airplane crashes. By the mid-1960s, the genre had developed into countrypolitan. Countrypolitan was aimed straight at mainstream markets, and it sold well throughout the later 1960s into the early 1970s. Top artists included Tammy Wynette, Lynn Anderson and Charlie Rich, as well as such former "hard country" artists as Ray Price and Marty Robbins. Despite the appeal of the Nashville sound, many traditional country artists emerged during this period and dominated the genre: Loretta Lynn, Merle Haggard, Buck Owens, Porter Wagoner, George Jones, and Sonny James among them. + +Country-soul crossover + +In 1962, Ray Charles surprised the pop world by turning his attention to country and western music, topping the charts and rating number three for the year on Billboard's pop chart with the "I Can't Stop Loving You" single, and recording the landmark album Modern Sounds in Country and Western Music. + +Bakersfield sound +Another subgenre of country music grew out of hardcore honky tonk with elements of western swing and originated north-northwest of Los Angeles in Bakersfield, California, where many "Okies" and other Dust Bowl migrants had settled. Influenced by one-time West Coast residents Bob Wills and Lefty Frizzell, by 1966 it was known as the Bakersfield sound. It relied on electric instruments and amplification, in particular the Telecaster electric guitar, more than other subgenres of the country music of the era, and it can be described as having a sharp, hard, driving, no-frills, edgy flavor—hard guitars and honky-tonk harmonies. Leading practitioners of this style were Buck Owens, Merle Haggard, Tommy Collins, Dwight Yoakam, Gary Allan, and Wynn Stewart, each of whom had his own style. + +Ken Nelson, who had produced Owens and Haggard and Rose Maddox became interested in the trucking song subgenre following the success of Six Days on the Road and asked Red Simpson to record an album of trucking songs. Haggard's White Line Fever was also part of the trucking subgenre. + +Western music merges with country + +The country music scene of the 1940s until the 1970s was largely dominated by western music influences, so much so that the genre began to be called "country and western". Even today, cowboy and frontier values continue to play a role in the larger country music, with western wear, cowboy boots, and cowboy hats continues to be in fashion for country artists. + +West of the Mississippi river, many of these western genres continue to flourish, including the Red Dirt of Oklahoma, New Mexico music of New Mexico, and both Texas country music and Tejano music of Texas. During the 1950s until the early 1970s, the latter part of the western heyday in country music, many of these genres featured popular artists that continue to influence both their distinctive genres and larger country music. Red Dirt featured Bob Childers and Steve Ripley; for New Mexico music Al Hurricane, Al Hurricane Jr., and Antonia Apodaca; and within the Texas scenes Willie Nelson, Freddie Fender, Johnny Rodriguez, and Little Joe. + +As Outlaw country music emerged as subgenre in its own right, Red Dirt, New Mexico, Texas country, and Tejano grew in popularity as a part of the Outlaw country movement. Originating in the bars, fiestas, and honky-tonks of Oklahoma, New Mexico, and Texas, their music supplemented outlaw country's singer-songwriter tradition as well as 21st-century rock-inspired alternative country and hip hop-inspired country rap artists. + +Fourth generation (1970s–1980s) + +Outlaw movement + +Outlaw country was derived from the traditional western, including Red Dirt, New Mexico, Texas country, Tejano, and honky-tonk musical styles of the late 1950s and 1960s. Songs such as the 1963 Johnny Cash popularized "Ring of Fire" show clear influences from the likes of Al Hurricane and Little Joe, this influence just happened to culminate with artists such as Ray Price (whose band, the "Cherokee Cowboys", included Willie Nelson and Roger Miller) and mixed with the anger of an alienated subculture of the nation during the period, a collection of musicians that came to be known as the outlaw movement revolutionized the genre of country music in the early 1970s. "After I left Nashville (the early 70s), I wanted to relax and play the music that I wanted to play, and just stay around Texas, maybe Oklahoma. Waylon and I had that outlaw image going, and when it caught on at colleges and we started selling records, we were O.K. The whole outlaw thing, it had nothing to do with the music, it was something that got written in an article, and the young people said, 'Well, that's pretty cool.' And started listening." (Willie Nelson) The term outlaw country is traditionally associated with Willie Nelson, Jerry Jeff Walker, Hank Williams, Jr., Merle Haggard, Waylon Jennings and Joe Ely. It was encapsulated in the 1976 album Wanted! The Outlaws. + +Though the outlaw movement as a cultural fad had died down after the late 1970s (with Jennings noting in 1978 that it had gotten out of hand and led to real-life legal scrutiny), many western and outlaw country music artists maintained their popularity during the 1980s by forming supergroups, such as The Highwaymen, Texas Tornados, and Bandido. + +Country pop + +Country pop or soft pop, with roots in the countrypolitan sound, folk music, and soft rock, is a subgenre that first emerged in the 1970s. Although the term first referred to country music songs and artists that crossed over to top 40 radio, country pop acts are now more likely to cross over to adult contemporary music. It started with pop music singers like Glen Campbell, Bobbie Gentry, John Denver, Olivia Newton-John, Anne Murray, B. J. Thomas, the Bellamy Brothers, and Linda Ronstadt having hits on the country charts. Between 1972 and 1975, singer/guitarist John Denver released a series of hugely successful songs blending country and folk-rock musical styles ("Rocky Mountain High", "Sunshine on My Shoulders", "Annie's Song", "Thank God I'm a Country Boy", and "I'm Sorry"), and was named Country Music Entertainer of the Year in 1975. The year before, Olivia Newton-John, an Australian pop singer, won the "Best Female Country Vocal Performance" as well as the Country Music Association's most coveted award for females, "Female Vocalist of the Year". In response George Jones, Tammy Wynette, Jean Shepard and other traditional Nashville country artists dissatisfied with the new trend formed the short-lived "Association of Country Entertainers" in 1974; the ACE soon unraveled in the wake of Jones and Wynette's bitter divorce and Shepard's realization that most others in the industry lacked her passion for the movement. + +During the mid-1970s, Dolly Parton, a successful mainstream country artist since the late 1960s, mounted a high-profile campaign to cross over to pop music, culminating in her 1977 hit "Here You Come Again", which topped the U.S. country singles chart, and also reached No. 3 on the pop singles charts. Parton's male counterpart, Kenny Rogers, came from the opposite direction, aiming his music at the country charts, after a successful career in pop, rock and folk music with the First Edition, achieving success the same year with "Lucille", which topped the country charts and reached No. 5 on the U.S. pop singles charts, as well as reaching Number 1 on the British all-genre chart. Parton and Rogers would both continue to have success on both country and pop charts simultaneously, well into the 1980s. Country music propelled Kenny Rogers’ career, making him a three-time Grammy Award winner and six-time Country Music Association Awards winner. Having sold more than 50 million albums in the US, one of his Song "The Gambler," inspired several TV films, with Rogers as the main character. Artists like Crystal Gayle, Ronnie Milsap and Barbara Mandrell would also find success on the pop charts with their records. In 1975, author Paul Hemphill stated in the Saturday Evening Post, "Country music isn't really country anymore; it is a hybrid of nearly every form of popular music in America." + +During the early 1980s, country artists continued to see their records perform well on the pop charts. Willie Nelson and Juice Newton each had two songs in the top 5 of the Billboard Hot 100 in the early eighties: Nelson charted "Always on My Mind" (#5, 1982) and "To All the Girls I've Loved Before" (#5, 1984, a duet with Julio Iglesias), and Newton achieved success with "Queen of Hearts" (#2, 1981) and "Angel of the Morning" (#4, 1981). Four country songs topped the Billboard Hot 100 in the 1980s: "Lady" by Kenny Rogers, from the late fall of 1980; "9 to 5" by Dolly Parton, "I Love a Rainy Night" by Eddie Rabbitt (these two back-to-back at the top in early 1981); and "Islands in the Stream", a duet by Dolly Parton and Kenny Rogers in 1983, a pop-country crossover hit written by Barry, Robin, and Maurice Gibb of the Bee Gees. Newton's "Queen of Hearts" almost reached No. 1, but was kept out of the spot by the pop ballad juggernaut "Endless Love" by Diana Ross and Lionel Richie. The move of country music toward neotraditional styles led to a marked decline in country/pop crossovers in the late 1980s, and only one song in that period—Roy Orbison's "You Got It", from 1989—made the top 10 of both the Billboard Hot Country Singles" and Hot 100 charts, due largely to a revival of interest in Orbison after his sudden death. The only song with substantial country airplay to reach number one on the pop charts in the late 1980s was "At This Moment" by Billy Vera and the Beaters, an R&B song with slide guitar embellishment that appeared at number 42 on the country charts from minor crossover airplay. The record-setting, multi-platinum group Alabama was named Artist of the Decade for the 1980s by the Academy of Country Music. + +Country rock + +Country rock is a genre that started in the 1960s but became prominent in the 1970s. The late 1960s in American music produced a unique blend as a result of traditionalist backlash within separate genres. In the aftermath of the British Invasion, many desired a return to the "old values" of rock n' roll. At the same time there was a lack of enthusiasm in the country sector for Nashville-produced music. What resulted was a crossbred genre known as country rock. Early innovators in this new style of music in the 1960s and 1970s included Bob Dylan, who was the first to revert to country music with his 1967 album John Wesley Harding (and even more so with that album's follow-up, Nashville Skyline), followed by Gene Clark, Clark's former band the Byrds (with Gram Parsons on Sweetheart of the Rodeo) and its spin-off the Flying Burrito Brothers (also featuring Gram Parsons), guitarist Clarence White, Michael Nesmith (the Monkees and the First National Band), the Grateful Dead, Neil Young, Commander Cody, the Allman Brothers Band, Charlie Daniels, the Marshall Tucker Band, Poco, Buffalo Springfield, Stephen Stills' band Manassas and Eagles, among many, even the former folk music duo Ian & Sylvia, who formed Great Speckled Bird in 1969. The Eagles would become the most successful of these country rock acts, and their compilation album Their Greatest Hits (1971–1975) remains the second-best-selling album in the US with 29 million copies sold. The Rolling Stones also got into the act with songs like "Dead Flowers"; the original recording of "Honky Tonk Women" was performed in a country style, but it was subsequently re-recorded in a hard rock style for the single version, and the band's preferred country version was later released on the album Let It Bleed, under the title "Country Honk". + +Described by AllMusic as the "father of country-rock", Gram Parsons' work in the early 1970s was acclaimed for its purity and for his appreciation for aspects of traditional country music. Though his career was cut tragically short by his 1973 death, his legacy was carried on by his protégé and duet partner Emmylou Harris; Harris would release her debut solo in 1975, an amalgamation of country, rock and roll, folk, blues and pop. Subsequent to the initial blending of the two polar opposite genres, other offspring soon resulted, including Southern rock, heartland rock and in more recent years, alternative country. In the decades that followed, artists such as Juice Newton, Alabama, Hank Williams, Jr. (and, to an even greater extent, Hank Williams III), Gary Allan, Shania Twain, Brooks & Dunn, Faith Hill, Garth Brooks, Dwight Yoakam, Steve Earle, Dolly Parton, Rosanne Cash and Linda Ronstadt moved country further towards rock influence. + +Neocountry +In 1980, a style of "neocountry disco music" was popularized by the film Urban Cowboy. It was during this time that a glut of pop-country crossover artists began appearing on the country charts: former pop stars Bill Medley (of the Righteous Brothers), "England Dan" Seals (of England Dan and John Ford Coley), Tom Jones, and Merrill Osmond (both alone and with some of his brothers; his younger sister Marie Osmond was already an established country star) all recorded significant country hits in the early 1980s. Sales in record stores rocketed to $250 million in 1981; by 1984, 900 radio stations began programming country or neocountry pop full-time. As with most sudden trends, however, by 1984 sales had dropped below 1979 figures. + +Truck driving country + +Truck driving country music is a genre of country music +and is a fusion of honky-tonk, country rock and the Bakersfield sound. +It has the tempo of country rock and the emotion of honky-tonk, and its lyrics focus on a truck driver's lifestyle. Truck driving country songs often deal with the profession of trucking and love. Well-known artists who sing truck driving country include Dave Dudley, Red Sovine, Dick Curless, Red Simpson, Del Reeves, the Willis Brothers and Jerry Reed, with C. W. McCall and Cledus Maggard (pseudonyms of Bill Fries and Jay Huguely, respectively) being more humorous entries in the subgenre. Dudley is known as the father of truck driving country. + +Neotraditionalist movement + +During the mid-1980s, a group of new artists began to emerge who rejected the more polished country-pop sound that had been prominent on radio and the charts, in favor of more, traditional, "back-to-basics" production. Many of the artists during the latter half of the 1980s drew on traditional honky-tonk, bluegrass, folk and western swing. Artists who typified this sound included Travis Tritt, Reba McEntire, George Strait, Keith Whitley, Alan Jackson, John Anderson, Patty Loveless, Kathy Mattea, Randy Travis, Dwight Yoakam, Clint Black, Ricky Skaggs, and the Judds. + +Fifth generation (1990s) + +Country music was aided by the U.S. Federal Communications Commission's (FCC) Docket 80–90, which led to a significant expansion of FM radio in the 1980s by adding numerous higher-fidelity FM signals to rural and suburban areas. At this point, country music was mainly heard on rural AM radio stations; the expansion of FM was particularly helpful to country music, which migrated to FM from the AM band as AM became overcome by talk radio (the country music stations that stayed on AM developed the classic country format for the AM audience). At the same time, beautiful music stations already in rural areas began abandoning the format (leading to its effective demise) to adopt country music as well. This wider availability of country music led to producers seeking to polish their product for a wider audience. In 1990, Billboard, which had published a country music chart since the 1940s, changed the methodology it used to compile the chart: singles sales were removed from the methodology, and only airplay on country radio determined a song's place on the chart. + +In the 1990s, country music became a worldwide phenomenon thanks to Garth Brooks, who enjoyed one of the most successful careers in popular music history, breaking records for both sales and concert attendance throughout the decade. The RIAA has certified his recordings at a combined (128× platinum), denoting roughly 113 million U.S. shipments. Other artists who experienced success during this time included Clint Black, John Michael Montgomery, Tracy Lawrence, Tim McGraw, Kenny Chesney, Travis Tritt, Alan Jackson and the newly formed duo of Brooks & Dunn; George Strait, whose career began in the 1980s, also continued to have widespread success in this decade and beyond. Toby Keith began his career as a more pop-oriented country singer in the 1990s, evolving into an outlaw persona in the early 2000s with Pull My Chain and its follow-up, Unleashed. + +Success of female artists +Female artists such as Reba McEntire, Patty Loveless, Faith Hill, Martina McBride, Deana Carter, LeAnn Rimes, Mindy McCready, Pam Tillis, Lorrie Morgan, Shania Twain, and Mary Chapin Carpenter all released platinum-selling albums in the 1990s. The Dixie Chicks became one of the most popular country bands in the 1990s and early 2000s. Their 1998 debut album Wide Open Spaces went on to become certified 12× platinum while their 1999 album Fly went on to become 10× platinum. After their third album, Home, was released in 2003, the band made political news in part because of lead singer Natalie Maines's comments disparaging then-President George W. Bush while the band was overseas (Maines stated that she and her bandmates were ashamed to be from the same state as Bush, who had just commenced the Iraq War a few days prior). The comments caused a rift between the band and the country music scene, and the band's fourth (and most recent) album, 2006's Taking the Long Way, took a more rock-oriented direction; the album was commercially successful overall among non-country audiences but largely ignored among country audiences. After Taking the Long Way, the band broke up for a decade (with two of its members continuing as the Court Yard Hounds) before reuniting in 2016 and releasing new material in 2020. + +Canadian artist Shania Twain became the best selling female country artist of the decade. This was primarily due to the success of her breakthrough sophomore 1995 album, The Woman in Me, which was certified 12× platinum sold over 20 million copies worldwide and its follow-up, 1997's Come On Over, which was certified 20× platinum and sold over 40 million copies. The album became a major worldwide phenomenon and became one of the world's best selling albums for three years (1998, 1999 and 2000); it also went on to become the best selling country album of all time. + +Unlike the majority of her contemporaries, Twain enjoyed large international success that had been seen by very few country artists, before or after her. Critics have noted that Twain enjoyed much of her success due to breaking free of traditional country stereotypes and for incorporating elements of rock and pop into her music. In 2002, she released her successful fourth studio album, titled Up!, which was certified 11× platinum and sold over 15 million copies worldwide. Shania Twain has been nominated eighteen times for Grammy Awards and won five Grammys. [] She was the best-paid country music star in 2016 according to Forbes, with a net worth of $27.5 million. []Twain has been credited with breaking international boundaries for country music, as well as inspiring many country artists to incorporate different genres into their music in order to attract a wider audience. She is also credited with changing the way in which many female country performers would market themselves, as unlike many before her she used fashion and her sex appeal to get rid of the stereotypical 'honky-tonk' image the majority of country singers had in order to distinguish herself from many female country artists of the time. + +Line dancing revival +In the early-mid-1990s, country western music was influenced by the popularity of line dancing. This influence was so great that Chet Atkins was quoted as saying, "The music has gotten pretty bad, I think. It's all that damn line dancing." By the end of the decade, however, at least one line dance choreographer complained that good country line dance music was no longer being released. In contrast, artists such as Don Williams and George Jones who had more or less had consistent chart success through the 1970s and 1980s suddenly had their fortunes fall rapidly around 1991 when the new chart rules took effect. + +Alternative country + +Country influences combined with Punk rock and alternative rock to forge the "cowpunk" scene in Southern California during the 1980s, which included bands such as the Long Ryders, Lone Justice and the Beat Farmers, as well as the established punk group X, whose music had begun to include country and rockabilly influences. Simultaneously, a generation of diverse country artists outside of California emerged that rejected the perceived cultural and musical conservatism associated with Nashville's mainstream country musicians in favor of more countercultural outlaw country and the folk singer-songwriter traditions of artists such as Woody Guthrie, Gram Parsons and Bob Dylan. + +Artists from outside California who were associated with early alternative country included singer-songwriters such as Lucinda Williams, Lyle Lovett and Steve Earle, the Nashville country rock band Jason and the Scorchers, the Providence "cowboy pop" band Rubber Rodeo, and the British post-punk band the Mekons. Earle, in particular, was noted for his popularity with both country and college rock audiences: He promoted his 1986 debut album Guitar Town with a tour that saw him open for both country singer Dwight Yoakam and alternative rock band the Replacements. Yoakam also cultivated a fanbase spanning multiple genres through his stripped-down honky-tonk influenced sound, association with the cowpunk scene, and performances at Los Angeles punk rock clubs. + +These early styles had coalesced into a genre by the time the Illinois group Uncle Tupelo released their influential debut album No Depression in 1990. The album is widely credited as being the first "alternative country" album, and inspired the name of No Depression magazine, which exclusively covered the new genre. Following Uncle Tupelo's disbanding in 1994, its members formed two significant bands in genre: Wilco and Son Volt. Although Wilco's sound had moved away from country and towards indie rock by the time they released their critically acclaimed album Yankee Hotel Foxtrot in 2002, they have continued to be an influence on later alt-country artists. + +Other acts who became prominent in the alt-country genre during the 1990s and 2000s included the Bottle Rockets, the Handsome Family, Blue Mountain, Robbie Fulks, Blood Oranges, Bright Eyes, Drive-By Truckers, Old 97's, Old Crow Medicine Show, Nickel Creek, Neko Case, and Whiskeytown, whose lead singer Ryan Adams later had a successful solo-career. Alt-country, in various iterations overlapped with other genres, including Red Dirt country music (Cross Canadian Ragweed), jam bands (My Morning Jacket and the String Cheese Incident), and indie folk (the Avett Brothers). + +Despite the genre's growing popularity in the 1980s, 1990s and 2000s, alternative country and neo-traditionalist artists saw minimal support from country radio in those decades, despite strong sales and critical acclaim for albums such as the soundtrack to the 2000 film O Brother, Where Art Thou?. In 1987, the Beat Farmers gained airplay on country music stations with their song "Make It Last", but the single was pulled from the format when station programmers decreed the band's music was too rock-oriented for their audience. However, some alt-country songs have been crossover hits to mainstream country radio in cover versions by established artists on the format; Lucinda Williams' "Passionate Kisses" was a hit for Mary Chapin Carpenter in 1993, Ryan Adams' "When the Stars Go Blue" was a hit for Tim McGraw in 2007, and Old Crow Medicine Show's "Wagon Wheel" was a hit for Darius Rucker (member of Hootie & The Blowfish) in 2013. + +In the 2010s, the alt-country genre saw an increase in its critical and commercial popularity, owing to the success of artists such as the Civil Wars, Chris Stapleton, Sturgill Simpson, Jason Isbell, Lydia Loveless and Margo Price. In 2019, Kacey Musgraves – a country artist who had gained a following with indie rock fans and music critics despite minimal airplay on country radio – won the Grammy Award for Album of the Year for her album Golden Hour. + +Sixth generation (2000s–present) + +The sixth generation of country music continued to be influenced by other genres such as pop, rock, and R&B. Richard Marx crossed over with his Days in Avalon album, which features five country songs and several singers and musicians. Alison Krauss sang background vocals to Marx's single "Straight from My Heart." Also, Bon Jovi had a hit single, "Who Says You Can't Go Home", with Jennifer Nettles of Sugarland. Kid Rock's collaboration with Sheryl Crow, "Picture," was a major crossover hit in 2001 and began Kid Rock's transition from hard rock to a country-rock hybrid that would later produce another major crossover hit, 2008's "All Summer Long." (Crow, whose music had often incorporated country elements, would also officially cross over into country with her hit "Easy" from her debut country album Feels like Home). Darius Rucker, frontman for the 1990s pop-rock band Hootie & the Blowfish, began a country solo career in the late 2000s, one that to date has produced five albums and several hits on both the country charts and the Billboard Hot 100. Singer-songwriter Unknown Hinson became famous for his appearance in the Charlotte television show Wild, Wild, South, after which Hinson started his own band and toured in southern states. Other rock stars who featured a country song on their albums were Don Henley (who released Cass County in 2015, an album which featured collaborations with numerous country artists) and Poison. + +The back half of the 2010-2020 decade saw an increasing number of mainstream country acts collaborate with pop and R&B acts; many of these songs achieved commercial success by appealing to fans across multiple genres; examples include collaborations between Kane Brown and Marshmello and Maren Morris and Zedd. There has also been interest from pop singers in country music, including Beyoncé, Lady Gaga, Alicia Keys, Gwen Stefani, Justin Timberlake, Justin Bieber and Pink. Supporting this movement is the new generation of contemporary pop-country, including Taylor Swift, Miranda Lambert, Carrie Underwood, Kacey Musgraves, Miley Cyrus, Billy Ray Cyrus, Sam Hunt, Chris Young, who introduced new themes in their works, touching on fundamental rights, feminism, and controversies about racism and religion of the older generations. + +Popular culture + +In 2005, country singer Carrie Underwood rose to fame as the winner of the fourth season of American Idol and has since become one of the most prominent recording artists in the genre, with worldwide sales of more than 65 million records and seven Grammy Awards. With her first single, "Inside Your Heaven", Underwood became the only solo country artist to have a number 1 hit on the Billboard Hot 100 chart in the 2000–2009 decade and also broke Billboard chart history as the first country music artist ever to debut at No. 1 on the Hot 100. Underwood's debut album, Some Hearts, became the best-selling solo female debut album in country music history, the fastest-selling debut country album in the history of the SoundScan era and the best-selling country album of the last 10 years, being ranked by Billboard as the number 1 Country Album of the 2000–2009 decade. She has also become the female country artist with the most number one hits on the Billboard Hot Country Songs chart in the Nielsen SoundScan era (1991–present), having 14 #1s and breaking her own Guinness Book record of ten. In 2007, Underwood won the Grammy Award for Best New Artist, becoming only the second Country artist in history (and the first in a decade) to win it. She also made history by becoming the seventh woman to win Entertainer of the Year at the Academy of Country Music Awards, and the first woman in history to win the award twice, as well as twice consecutively. Time has listed Underwood as one of the 100 most influential people in the world. +In 2016, Underwood topped the Country Airplay chart for the 15th time, becoming the female artist with the most number ones on that chart. + +Carrie Underwood was only one of several country stars produced by a television series in the 2000s. In addition to Underwood, American Idol launched the careers of Kellie Pickler, Josh Gracin, Bucky Covington, Kristy Lee Cook, Danny Gokey, Lauren Alaina and Scotty McCreery (as well as that of occasional country singer Kelly Clarkson) in the decade, and would continue to launch country careers in the 2010s. The series Nashville Star, while not nearly as successful as Idol, did manage to bring Miranda Lambert, Kacey Musgraves and Chris Young to mainstream success, also launching the careers of lower-profile musicians such as Buddy Jewell, Sean Patrick McGraw, and Canadian musician George Canyon. Can You Duet? produced the duos Steel Magnolia and Joey + Rory. Teen sitcoms also have influenced modern country music; in 2008, actress Jennette McCurdy (best known as the sidekick Sam on the teen sitcom iCarly) released her first single, "So Close", following that with the single "Generation Love" in 2011. Another teen sitcom star, Miley Cyrus (of Disney Channel's Hannah Montana), also had a crossover hit in the late 2000s with "The Climb" and another with a duet with her father, Billy Ray Cyrus, with "Ready, Set, Don't Go." Jana Kramer, an actress in the teen drama One Tree Hill, released a country album in 2012 that has produced two hit singles as of 2013. Actresses Hayden Panettiere and Connie Britton began recording country songs as part of their roles in the TV shows Nashville and Pretty Little Liars star Lucy Hale released her debut album Road Between in 2014. + +In 2010, the group Lady Antebellum won five Grammys, including the coveted Song of the Year and Record of the Year for "Need You Now". A large number of duos and vocal groups emerged on the charts in the 2010s, many of which feature close harmony in the lead vocals. In addition to Lady A, groups such as Little Big Town, the Band Perry, Gloriana, Thompson Square, Eli Young Band, Zac Brown Band and British duo the Shires have emerged to occupy a large share of mainstream success alongside solo singers such as Kacey Musgraves and Miranda Lambert. + +One of the most commercially successful country artists of the late 2000s and early 2010s has been singer-songwriter Taylor Swift. Swift first became widely known in 2006 when her debut single, "Tim McGraw", was released when Swift was only 16 years old. In 2006, Swift released her self-titled debut studio album, which spent 275 weeks on Billboard 200, one of the longest runs of any album on that chart. In 2008, Taylor Swift released her second studio album, Fearless, which made her the second longest number-one charted on Billboard 200 and the second best-selling album (just behind Adele's 21) within the past 5 years. At the 2010 Grammys, Taylor Swift was 20 and won Album of the Year for Fearless, which made her the youngest artist to win this award. Swift has received twelve Grammys already. + +Buoyed by her teen idol status among girls and a change in the methodology of compiling the Billboard charts to favor pop-crossover songs, Swift's 2012 single "We Are Never Ever Getting Back Together" spent the most weeks at the top of Billboard's Hot 100 chart and Hot Country Songs chart of any song in nearly five decades. The song's long run at the top of the chart was somewhat controversial, as the song is largely a pop song without much country influence and its success on the charts driven by a change to the chart's criteria to include airplay on non-country radio stations, prompting disputes over what constitutes a country song; many of Swift's later releases, such as album 1989 (2014), Reputation (2017), and Lover (2019) were released solely to pop audiences. Swift returned to country music in her recent folk-inspired releases, Folklore (2020) and Evermore (2020), with songs like "Betty" and "No Body, No Crime". + +Modern variations + +Influence of rock, pop and hip-hop +In the mid to late 2010s, country music began to increasingly sound more like the style of modern-day Pop music, with more simple and repetitive lyrics, more electronic-based instrumentation, and experimentation with "talk-singing" and rap, pop-country pulled farther away from the traditional sounds of country music and received criticisms from country music purists while gaining in popularity with mainstream audiences. The topics addressed have also changed, turning controversial such as acceptance of the LGBT community, safe sex, recreational marijuana use, and questioning religious sentiment. Influences also come from some pop artists' interest in the country genre, including Justin Timberlake with the album Man of the Woods, Beyoncé's single "Daddy Lessons" from Lemonade, Gwen Stefani with "Nobody but You", Bruno Mars, Lady Gaga, Alicia Keys, Kelly Clarkson, and Pink. + +The influence of rock music in country has become more overt during the late 2000s and early 2010s as artists like Eric Church, Jason Aldean, and Brantley Gilbert have had success; Aaron Lewis, former frontman for the rock group Staind, had a moderately successful entry into country music in 2011 and 2012, as did Dallas Smith, former frontman of the band Default. + +Maren Morris success collaboration "The Middle" with EDM producer Zedd is considered one of the representations of the fusion of electro-pop with country music. + +Lil Nas X song "Old Town Road" spent 19 weeks atop the US Billboard Hot 100 chart, becoming the longest-running number-one song since the chart debuted in 1958, winning Billboard Music Awards, MTV Video Music Awards and Grammy Award. Sam Hunt "Leave the Night On" peaked concurrently on the Hot Country Songs and Country Airplay charts, making Hunt the first country artist in 22 years, since Billy Ray Cyrus, to reach the top of three country charts simultaneously in the Nielsen SoundScan-era. With the fusion genre of "country trap"—a fusion of country/western themes to a hip hop beat, but usually with fully sung lyrics—emerging in the late 2010s, line dancing country had a minor revival, examples of the phenomenon include "The Git Up" by Blanco Brown. Blanco Brown has gone of to make more traditional country soul songs such as "I Need Love" and a rendition of "Don't Take the Girl" with Tim McGraw, and collaborations like "Just the Way" with Parmalee. Another country trap artist known as Breland has seen success with "My Truck, "Throw It Back" with Keith Urban, and "Praise the Lord" featuring Thomas Rhett. + +Emo rap musician Sueco, released a cowpunk song in collaboration is country musician Warren Zeiders titled "Ride It Hard". Alex Melton, known for his music covers, blends pop punk with country music. + +Bro country + +In the early 2010s, "bro-country", a genre noted primarily for its themes on drinking and partying, girls, and pickup trucks became particularly popular. Notable artists associated with this genre are Luke Bryan, Jason Aldean, Blake Shelton, Jake Owen and Florida Georgia Line whose song "Cruise" became the best-selling country song of all time. Research in the mid-2010s suggested that about 45 percent of country's best-selling songs could be considered bro-country, with the top two artists being Luke Bryan and Florida Georgia Line. Albums by bro-country singers also sold very well—in 2013, Luke Bryan's Crash My Party was the third best-selling of all albums in the United States, with Florida Georgia Line's Here's to the Good Times at sixth, and Blake Shelton's Based on a True Story at ninth. It is also thought that the popularity of bro-country helped country music to surpass classic rock as the most popular genre in the American country in 2012. The genre however is controversial as it has been criticized by other country musicians and commentators over its themes and depiction of women, opening up a divide between the older generation of country singers and the younger bro country singers that was described as "civil war" by musicians, critics, and journalists." In 2014, Maddie & Tae's "Girl in a Country Song", addressing many of the controversial bro-country themes, peaked at number one on the Billboard Country Airplay chart. + +Bluegrass and Americana + +is a genre that contain songs about going through hard times, country loving, and telling stories. Newer artists like Billy Strings, the Grascals, Molly Tuttle, Tyler Childers and the Infamous Stringdusters have been increasing the popularity of this genre, alongside some of the genres more established stars who still remain popular including Rhonda Vincent, Alison Krauss and Union Station, Ricky Skaggs and Del McCoury. The genre has developed in the Northern Kentucky and Cincinnati area. Other artists include New South (band), Doc Watson, Osborne Brothers, and many others. + +In an effort to combat the over-reliance of mainstream country music on pop-infused artists, the sister genre of Americana began to gain popularity and increase in prominence, receiving eight Grammy categories of its own in 2009. Americana music incorporates elements of country music, bluegrass, folk, blues, gospel, rhythm and blues, roots rock and southern soul and is overseen by the Americana Music Association and the Americana Music Honors & Awards. As a result of an increasingly pop-leaning mainstream, many more traditional-sounding artists such as Tyler Childers, Zach Bryan and Old Crow Medicine Show began to associate themselves more with Americana and the alternative country scene where their sound was more celebrated. Similarly, many established country acts who no longer received commercial airplay, including Emmylou Harris and Lyle Lovett, began to flourish again. + +Contemporary country and western revival + +During the mid-1980s, a group of new artists began to emerge who rejected the more polished country-pop sound that had been prominent on radio and the charts, in favor of more, traditional, "back-to-basics" production. Many of the artists during the latter half of the 1980s drew on traditional honky-tonk, bluegrass, folk and western swing. Artists who typified this sound included Travis Tritt, Reba McEntire, George Strait, Keith Whitley, Alan Jackson, John Anderson, Patty Loveless, Kathy Mattea, Randy Travis, Dwight Yoakam, Clint Black, Ricky Skaggs, and the Judds. + +Beginning in 1989, a confluence of events brought an unprecedented commercial boom to country music. New marketing strategies were used to engage fans, powered by technology that more accurately tracked the popularity of country music, and boosted by a political and economic climate that focused attention on the genre. Garth Brooks ("Friends in Low Places") in particular attracted fans with his fusion of neotraditionalist country and stadium rock. Other artists such as Brooks and Dunn ("Boot Scootin' Boogie") also combined conventional country with slick, rock elements, while Lorrie Morgan, Mary Chapin Carpenter, and Kathy Mattea updated neotraditionalist styles. + +Roots of conservative country was Lee Greenwood's "God Bless the USA". The September 11 attacks of 2001 and the economic recession helped move country music back into the spotlight. Many country artists, such as Alan Jackson with his ballad on terrorist attacks, "Where Were You (When the World Stopped Turning)", wrote songs that celebrated the military, highlighted the gospel, and emphasized home and family values over wealth. Alt-Country singer Ryan Adams song "New York, New York" pays tribute to New York City, and its popular music video (which was shot 4 days before the attacks) shows Adams playing in front of the Manhattan skyline, Along with several shots of the city. In contrast, more rock-oriented country singers took more direct aim at the attacks' perpetrators; Toby Keith's "Courtesy of the Red, White and Blue (The Angry American)" threatened to "a boot in" the posterior of the enemy, while Charlie Daniels's "This Ain't No Rag, It's a Flag" promised to "hunt" the perpetrators "down like a mad dog hound." These songs gained such recognition that it put country music back into popular culture. Darryl Worley recorded "Have You Forgotten" also. There have been numerous patriotic country songs throughout the years. + +Some modern artists that primarily or entirely produce country pop music include Kacey Musgraves, Maren Morris, Kelsea Ballerini, Sam Hunt, Kane Brown, Chris Lane, and Dan + Shay. The singers who are part of this country movement are also defined as "Nashville's new generation of country". + +Although the changes made by the new generation, it has been recognized by major music awards associations and successes in Billboard and international charts. Golden Hour by Kacey Musgraves won album of the year at 61st Annual Grammy Awards, Academy of Country Music Awards, Country Music Association Awards, although it has received widespread criticism from the more traditionalist public. + +International + +Australia + +Australian country music has a long tradition. Influenced by US country music, it has developed a distinct style, shaped by British and Irish folk ballads and Australian bush balladeers like Henry Lawson and Banjo Paterson. Country instruments, including the guitar, banjo, fiddle and harmonica, create the distinctive sound of country music in Australia and accompany songs with strong storyline and memorable chorus. + +Folk songs sung in Australia between the 1780s and 1920s, based around such themes as the struggle against government tyranny, or the lives of bushrangers, swagmen, drovers, stockmen and shearers, continue to influence the genre. This strain of Australian country, with lyrics focusing on Australian subjects, is generally known as "bush music" or "bush band music". "Waltzing Matilda", often regarded as Australia's unofficial national anthem, is a quintessential Australian country song, influenced more by British and Irish folk ballads than by US country and western music. The lyrics were composed by the poet Banjo Paterson in 1895. Other popular songs from this tradition include "The Wild Colonial Boy", "Click Go the Shears", "The Queensland Drover" and "The Dying Stockman". Later themes which endure to the present include the experiences of war, of droughts and flooding rains, of Aboriginality and of the railways and trucking routes which link Australia's vast distances. + +Pioneers of a more Americanised popular country music in Australia included Tex Morton (known as "The Father of Australian Country Music") in the 1930s. Author Andrew Smith delivers a through research and engaged view of Tex Morton's life and his impact on the country music scene in Australia in the 1930s and 1940s. Other early stars included Buddy Williams, Shirley Thoms and Smoky Dawson. Buddy Williams (1918–1986) was the first Australian-born to record country music in Australia in the late 1930s and was the pioneer of a distinctly Australian style of country music called the bush ballad that others such as Slim Dusty would make popular in later years. During the Second World War, many of Buddy Williams recording sessions were done whilst on leave from the Army. At the end of the war, Williams would go on to operate some of the largest travelling tent rodeo shows Australia has ever seen. + +In 1952, Dawson began a radio show and went on to national stardom as a singing cowboy of radio, TV and film. Slim Dusty (1927–2003) was known as the "King of Australian Country Music" and helped to popularise the Australian bush ballad. His successful career spanned almost six decades, and his 1957 hit "A Pub with No Beer" was the biggest-selling record by an Australian to that time, and with over seven million record sales in Australia he is the most successful artist in Australian musical history. Dusty recorded and released his one-hundredth album in the year 2000 and was given the honour of singing "Waltzing Matilda" in the closing ceremony of the Sydney 2000 Olympic Games. Dusty's wife Joy McKean penned several of his most popular songs. + +Chad Morgan, who began recording in the 1950s, has represented a vaudeville style of comic Australian country; Frank Ifield achieved considerable success in the early 1960s, especially in the UK Singles Charts and Reg Lindsay was one of the first Australians to perform at Nashville's Grand Ole Opry in 1974. Eric Bogle's 1972 folk lament to the Gallipoli Campaign "And the Band Played Waltzing Matilda" recalled the British and Irish origins of Australian folk-country. Singer-songwriter Paul Kelly, whose music style straddles folk, rock and country, is often described as the poet laureate of Australian music. + +By the 1990s, country music had attained crossover success in the pop charts, with artists like James Blundell and James Reyne singing "Way Out West", and country star Kasey Chambers winning the ARIA Award for Best Female Artist in three years (2000, 2002 and 2004), tying with pop stars Wendy Matthews and Sia for the most wins in that category. Furthermore, Chambers has gone on to win nine ARIA Awards for Best Country Album and, in 2018, became the youngest artist to ever be inducted into the ARIA Hall of Fame. The crossover influence of Australian country is also evident in the music of successful contemporary bands the Waifs and the John Butler Trio. Nick Cave has been heavily influenced by the country artist Johnny Cash. In 2000, Cash, covered Cave's "The Mercy Seat" on the album American III: Solitary Man, seemingly repaying Cave for the compliment he paid by covering Cash's "The Singer" (originally "The Folk Singer") on his Kicking Against the Pricks album. Subsequently, Cave cut a duet with Cash on a version of Hank Williams' "I'm So Lonesome I Could Cry" for Cash's American IV: The Man Comes Around album (2002). + +Popular contemporary performers of Australian country music include John Williamson (who wrote the iconic "True Blue"), Lee Kernaghan (whose hits include "Boys from the Bush" and "The Outback Club"), Gina Jeffreys, Forever Road and Sara Storer. In the U.S., Olivia Newton-John, Sherrié Austin and Keith Urban have attained great success. During her time as a country singer in the 1970s, Newton-John became the first (and to date only) non-US winner of the Country Music Association Award for Female Vocalist of the Year which many considered a controversial decision by the CMA; after starring in the rock-and-roll musical film Grease in 1978, Newton-John (mirroring the character she played in the film) shifted to pop music in the 1980s. Urban is arguably considered the most successful international Australian country star, winning nine CMA Awards, including three Male Vocalist of the Year wins and two wins of the CMA's top honour Entertainer of the Year. Pop star Kylie Minogue found success with her 2018 country pop album Golden which she recorded in Nashville reaching number one in Scotland, the UK and her native Australia. + +Country music has been a particularly popular form of musical expression among Indigenous Australians. Troy Cassar-Daley is among Australia's successful contemporary indigenous performers, and Kev Carmody and Archie Roach employ a combination of folk-rock and country music to sing about Aboriginal rights issues. + +The Tamworth Country Music Festival began in 1973 and now attracts up to 100,000 visitors annually. Held in Tamworth, New South Wales (country music capital of Australia), it celebrates the culture and heritage of Australian country music. During the festival the CMAA holds the Country Music Awards of Australia ceremony awarding the Golden Guitar trophies. Other significant country music festivals include the Whittlesea Country Music Festival (near Melbourne) and the Mildura Country Music Festival for "independent" performers during October, and the Canberra Country Music Festival held in the national capital during November. + +Country HQ showcases new talent on the rise in the country music scene down under. CMC (the Country Music Channel), a 24‑hour music channel dedicated to non-stop country music, can be viewed on pay TV and features once a year the Golden Guitar Awards, CMAs and CCMAs alongside international shows such as The Wilkinsons, The Road Hammers, and Country Music Across America. + +Canada + +Outside of the United States, Canada has the largest country music fan and artist base, something that is to be expected given the two countries' proximity and cultural parallels. Mainstream country music is culturally ingrained in the prairie provinces, the British Columbia Interior, Northern Ontario, and in Atlantic Canada. Celtic traditional music developed in Atlantic Canada in the form of Scottish, Acadian and Irish folk music popular amongst Irish, French and Scottish immigrants to Canada's Atlantic Provinces (Newfoundland, Nova Scotia, New Brunswick, and Prince Edward Island). Like the southern United States and Appalachia, all four regions are of heavy British Isles stock and rural; as such, the development of traditional music in the Maritimes somewhat mirrored the development of country music in the US South and Appalachia. Country and western music never really developed separately in Canada; however, after its introduction to Canada, following the spread of radio, it developed quite quickly out of the Atlantic Canadian traditional scene. While true Atlantic Canadian traditional music is very Celtic or "sea shanty" in nature, even today, the lines have often been blurred. Certain areas often are viewed as embracing one strain or the other more openly. For example, in Newfoundland the traditional music remains unique and Irish in nature, whereas traditional musicians in other parts of the region may play both genres interchangeably. + +Don Messer's Jubilee was a Halifax, Nova Scotia-based country/folk variety television show that was broadcast nationally from 1957 to 1969. In Canada it out-performed The Ed Sullivan Show broadcast from the United States and became the top-rated television show throughout much of the 1960s. Don Messer's Jubilee followed a consistent format throughout its years, beginning with a tune named "Goin' to the Barndance Tonight", followed by fiddle tunes by Messer, songs from some of his "Islanders" including singers Marg Osburne and Charlie Chamberlain, the featured guest performance, and a closing hymn. It ended with "Till We Meet Again". The guest performance slot gave national exposure to numerous Canadian folk musicians, including Stompin' Tom Connors and Catherine McKinnon. Some Maritime country performers went on to further fame beyond Canada. Hank Snow, Wilf Carter (also known as Montana Slim), and Anne Murray are the three most notable. The cancellation of the show by the public broadcaster in 1969 caused a nationwide protest, including the raising of questions in the Parliament of Canada. + +The Prairie provinces, due to their western cowboy and agrarian nature, are the true heartland of Canadian country music. While the Prairies never developed a traditional music culture anything like the Maritimes, the folk music of the Prairies often reflected the cultural origins of the settlers, who were a mix of Scottish, Ukrainian, German and others. For these reasons polkas and western music were always popular in the region, and with the introduction of the radio, mainstream country music flourished. As the culture of the region is western and frontier in nature, the specific genre of country and western is more popular today in the Prairies than in any other part of the country. No other area of the country embraces all aspects of the culture, from two-step dancing, to the cowboy dress, to rodeos, to the music itself, like the Prairies do. The Atlantic Provinces, on the other hand, produce far more traditional musicians, but they are not usually specifically country in nature, usually bordering more on the folk or Celtic genres. + +Canadian country pop star Shania Twain is the best-selling female country artist of all time and one of the best-selling artists of all time in any genre. Furthermore, she is the only woman to have three consecutive albums be certified Diamond. + +Mexico and Latin America + +Country music artists from the U.S. have seen crossover with Latin American audiences, particularly in Mexico. Country music artists from throughout the U.S. have recorded renditions of Mexican folk songs, including "El Rey" which was performed on George Strait's Twang album and during Al Hurricane's tribute concert. American Latin pop crossover musicians, like Lorenzo Antonio's "Ranchera Jam" have also combined Mexican songs with country songs in a New Mexico music style. + +While Tejano and New Mexico music is typically thought of as being Spanish language, the genres have also had charting musicians focused on English language music. During the 1970s, singer-songwriter Freddy Fender had two #1 country music singles, that were popular throughout North America, with "Before the Next Teardrop Falls" and "Wasted Days and Wasted Nights". Notable songs which have been influenced by Hispanic and Latin culture as performed by US country music artists include Marty Robbins' "El Paso" trilogy, Willie Nelson and Merle Haggard covering the Townes Van Zandt song "Pancho and Lefty", "Toes" by Zac Brown Band, and "Sangria" by Blake Shelton. + +Regional Mexican is a radio format featuring many of Mexico's versions of country music. It includes a number of different styles, usually named after their region of origin. One specific song style, the Canción Ranchera, or simply Ranchera, literally meaning "ranch song", found its origins in the Mexican countryside and was first popularized with Mariachi. It has since also become popular with Grupero, Banda, Norteño, Tierra Caliente, Duranguense and other regional Mexican styles. The Corrido, a different song style with a similar history, is also performed in many other regional styles, and is most related to the western style of the United States and Canada. Other song styles performed in regional Mexican music include Ballads, Cumbias, Boleros, among others. Country en Español (Country in Spanish) is also popular in Mexico. Some Mexican artists began performing country songs in Spanish during the 1970s, and the genre became prominent mainly in the northern regions of the country during the 1980s. A Country en Español popularity boom also reached the central regions of Mexico during the 1990s. For most of its history, Country en Español mainly resembled Neotraditional country. However, in more modern times, some artists have incorporated influences from other country music subgenres. + +In Brazil, there is Música Sertaneja, the most popular music genre in that country. It originated in the countryside of São Paulo state in the 1910s, before the development of U.S. country music. + +In Argentina, on the last weekend of September, the yearly San Pedro Country Music Festival takes place in the town of San Pedro, Buenos Aires. The festival features bands from different places in Argentina, as well as international artists from Brazil, Uruguay, Chile, Peru and the U.S. + +United Kingdom +Country music is popular in the United Kingdom, although somewhat less so than in other English-speaking countries. There are some British country music acts and publications. Although radio stations devoted to country are among the most popular in other Anglophone nations, none of the top ten most-listened-to stations in the UK are country stations, and national broadcaster BBC Radio does not offer a full-time country station (BBC Radio 2 Country, a "pop-up" station, operated four days each year between 2015 and 2017). The BBC does offer a country show on BBC Radio 2 each week hosted by Bob Harris. + +The most successful British country music act of the 21st century are Ward Thomas and the Shires. In 2015, the Shires' album Brave, became the first UK country act ever to chart in the Top 10 of the UK Albums Chart and they became the first UK country act to receive an award from the American Country Music Association. In 2016, Ward Thomas then became the first UK country act to hit number 1 in the UK Albums Chart with their album Cartwheels. + +There is the C2C: Country to Country festival held every year, and for many years there was a festival at Wembley Arena, which was broadcast on the BBC, the International Festivals of Country Music, promoted by Mervyn Conn, held at the venue between 1969 and 1991. The shows were later taken into Europe, and featured such stars as Johnny Cash, Dolly Parton, Tammy Wynette, David Allan Coe, Emmylou Harris, Boxcar Willie, Johnny Russell and Jerry Lee Lewis. A handful of country musicians had even greater success in mainstream British music than they did in the U.S., despite a certain amount of disdain from the music press. Britain's largest music festival Glastonbury has featured major US country acts in recent years, such as Kenny Rogers in 2013 and Dolly Parton in 2014. + +From within the UK, few country musicians achieved widespread mainstream success. Many British singers who performed the occasional country songs are of other genres. Tom Jones, by this point near the end of his peak success as a pop singer, had a string of country hits in the late 1970s and early 1980s. The Bee Gees had some fleeting success in the genre, with one country hit as artists ("Rest Your Love on Me") and a major hit as songwriters ("Islands in the Stream"); Barry Gibb, the band's usual lead singer and last surviving member, acknowledged that country music was a major influence on the band's style. Singer Engelbert Humperdinck, while charting only once in the U.S. country top 40 with "After the Lovin'," achieved widespread success on both the U.S. and British pop charts with his covers of Nashville country ballads such as "Release Me," "Am I That Easy to Forget" and "There Goes My Everything." Welsh singer Bonnie Tyler initially started her career making country records, and in 1978 her single "It's a Heartache" reached number four on the UK Singles Chart. In 2013, Tyler returned to her roots, blending the country elements of her early work with the rock of her successful material on her album Rocks and Honey which featured a duet with Vince Gill. The songwriting tandem of Roger Cook and Roger Greenaway wrote a number of country hits, in addition to their widespread success in pop songwriting; Cook is notable for being the only Briton to be inducted into the Nashville Songwriters Hall of Fame. + +A niche country subgenre popular in the West Country is Scrumpy and Western, which consists mostly of novelty songs and comedy music recorded there (its name comes from scrumpy, an alcoholic beverage). A primarily local interest, the largest Scrumpy and Western hit in the UK and Ireland was "The Combine Harvester," which pioneered the genre and reached number one in both the UK and Ireland; Fred Wedlock had a number-six hit in 1981 with "The Oldest Swinger in Town." In 1975, comedian Billy Connolly topped the UK Singles Chart with "D.I.V.O.R.C.E.", a parody of the Tammy Wynette song "D-I-V-O-R-C-E". + +The British Country Music Festival is an annual three-day festival held in the seaside resort of Blackpool. It uniquely promotes artists from the United Kingdom and Ireland to celebrate the impact that Celtic and British settlers to America had on the origins of country music. Past headline artists have included Amy Wadge, Ward Thomas, Tom Odell, Nathan Carter, Lisa McHugh, Catherine McGrath, Wildwood Kin, The Wandering Hearts and Henry Priestman. + +Ireland + +In Ireland, Country and Irish is a music genre that combines traditional Irish folk music with US country music. Television channel TG4 began a quest for Ireland's next country star called Glór Tíre, translated as "Country Voice". It is now in its sixth season and is one of TG4's most-watched TV shows. Over the past ten years, country and gospel recording artist James Kilbane has reached multi-platinum success with his mix of Christian and traditional country influenced albums. James Kilbane like many other Irish artists is today working closer with Nashville. Daniel O'Donnell achieved international success with his brand of music crossing country, Irish folk and European easy listening, earning a strong following among older women both in the British Isles and in North America. A recent success in the Irish arena has been Crystal Swing. + +Japan and Asia + +In Japan, there are forms of J-country and J-western similar to other J-pop movements, J-hip hop and J-rock. One of the first J-western musicians was Biji Kuroda & The Chuck Wagon Boys, other vintage artists included Jimmie Tokita and His Mountain Playboys, The Blue Rangers, Wagon Aces, and Tomi Fujiyama. J-country continues to have a dedicated following in Japan, thanks to Charlie Nagatani, Katsuoshi Suga, J.T. Kanehira, Dicky Kitano, and Manami Sekiya. Country and western venues in Japan include the former annual Country Gold which were put together by Charlie Nagatani, and the modern honky tonks at Little Texas in Tokyo and Armadillo in Nagoya. + +In India, there is an annual concert festival called "Blazing Guitars" held in Chennai brings together Anglo-Indian musicians from all over the country (including some who have emigrated to places like Australia). The year 2003 brought home-grown Indian, Bobby Cash to the forefront of the country music culture in India when he became India's first international country music artist to chart singles in Australia. + +In the Philippines, country music has found their way into Cordilleran way of life, which often compares the Igorot lifestyle to that of US cowboys. Baguio City has an FM station that caters to country music, DZWR 99.9 Country, which is part of the Catholic Media Network. Bombo Radyo Baguio has a segment on its Sunday slot for Igorot, Ilocano and country music. And as of recently, DWUB occasionally plays country music. Many country music musicians tour the Philippines. Original Pinoy Music has influences from country. + +Other international country music +Tom Roland, from the Country Music Association International, explains country music's global popularity: "In this respect, at least, Country Music listeners around the globe have something in common with those in the United States. In Germany, for instance, Rohrbach identifies three general groups that gravitate to the genre: people intrigued with the US cowboy icon, middle-aged fans who seek an alternative to harder rock music and younger listeners drawn to the pop-influenced sound that underscores many current Country hits." One of the first US people to perform country music abroad was George Hamilton IV. He was the first country musician to perform in the Soviet Union; he also toured in Australia and the Middle East. He was deemed the "International Ambassador of Country Music" for his contributions to the globalization of country music. Johnny Cash, Emmylou Harris, Keith Urban, and Dwight Yoakam have also made numerous international tours. The Country Music Association undertakes various initiatives to promote country music internationally. + +Middle East +In Iran, country music has appeared in recent years. According to Melody Music Magazine, the pioneer of country music in Iran is the English-speaking country music band Dream Rovers, whose founder, singer and songwriter is Erfan Rezayatbakhsh (elf). The band was formed in 2007 in Tehran, and during this time they have been trying to introduce and popularize country music in Iran by releasing two studio albums and performing live at concerts, despite the difficulties that the Islamic regime in Iran makes for bands that are active in the western music field. + +Musician Toby Keith performed alongside Saudi Arabian folk musician Rabeh Sager in 2017. This concert was similar to the performances of Jazz ambassadors that performed distinctively American style music internationally. + +Continental Europe + +In Sweden, Rednex rose to stardom combining country music with electro-pop in the 1990s. In 1994, the group had a worldwide hit with their version of the traditional Southern tune "Cotton-Eyed Joe". Artists popularizing more traditional country music in Sweden have been Ann-Louise Hanson, Hasse Andersson, Kikki Danielsson, Elisabeth Andreassen and Jill Johnson. In Poland an international country music festival, known as Piknik Country, has been organised in Mrągowo in Masuria since 1983. The number of country music artists in France has increased. Some of the most important are Liane Edwards, Annabel, Rockie Mountains, Tahiana, and Lili West. French rock and roll singer Eddy Mitchell is also inspired by Americana and country music. + +In the Netherlands there are many artists producing popular country and Americana music, which is mostly in the English language, as well as Dutch country and country-like music in the Dutch language. The latter is mainly popular on the countrysides in the northern and eastern parts of the Netherlands and is less associated with its US brethren, although it sounds sometimes very similar. Well-known popular artists mainly performing in English are Waylon, Danny Vera, Ilse DeLange, Douwe Bob and Henk Wijngaard. + +Performers and shows + +US cable television +Several US television networks are at least partly devoted to the genre: Country Music Television (the first channel devoted to country music) and CMT Music (both owned by Paramount Global), RFD-TV and The Cowboy Channel (both owned by Rural Media Group), Heartland (owned by Get After It Media), Circle (a joint venture of the Grand Ole Opry and Gray Television), The Country Network (owned by TCN Country, LLC), and Country Music Channel (the country-oriented sister channel of California Music Channel). + +The Nashville Network (TNN) was launched in 1983 as a channel devoted to country music, and later added sports and outdoor lifestyle programming. It actually launched just two days after CMT. In 2000, after TNN and CMT fell under the same corporate ownership, TNN was stripped of its country format and rebranded as The National Network, then Spike TV in 2003, Spike in 2006, and finally Paramount Network in 2018. TNN was later revived from 2012 to 2013 after Jim Owens Entertainment (the company responsible for prominent TNN hosts Crook & Chase) acquired the trademark and licensed it to Luken Communications; that channel renamed itself Heartland after Luken was embroiled in an unrelated dispute that left the company bankrupt. + +Great American Country (GAC) was launched in 1995, also as a country music-oriented channel that would later add lifestyle programming pertaining to the American Heartland and South. In Spring 2021, GAC's then-owner, Discovery, Inc. divested the network to GAC Media, which also acquired the equestrian network Ride TV. Later, in the summer of that year, GAC Media relaunched Great American Country as GAC Family, a family-oriented general entertainment network, while Ride TV was relaunched as GAC Living, a network devoted to programming pertaining to lifestyles of the American South. The GAC acronym which once stood for "Great American Country" now stands for "Great American Channels". + +Canadian television + +Only one television channel was dedicated to country music in Canada: CMT owned by Corus Entertainment (90%) and Viacom (10%). However, the lifting of strict genre licensing restrictions saw the network remove the last of its music programming at the end of August 2017 for a schedule of generic off-network family sitcoms, Cancom-compliant lifestyle programming, and reality programming. In the past, the current-day Cottage Life network saw some country focus as Country Canada and later, CBC Country Canada before that network drifted into an alternate network for overflow CBC content as Bold. Stingray Music continues to maintain several country music audio-only channels on cable radio. + +In the past, country music had an extensive presence, especially on the Canadian national broadcaster, CBC Television. The show Don Messer's Jubilee significantly affected country music in Canada; for instance, it was the program that launched Anne Murray's career. Gordie Tapp's Country Hoedown and its successor, The Tommy Hunter Show, ran for a combined 36 years on the CBC, from 1956 to 1992; in its last nine years on air, the U.S. cable network TNN carried Hunter's show. + +Australian cable television +The only network dedicated to country music in Australia was the Country Music Channel owned by Foxtel. It ceased operations in June 2020 and was replaced by CMT (owned by Network 10 parent company Paramount Networks UK & Australia). + +British digital television +One music video channel is now dedicated to country music in the United Kingdom: Spotlight TV, owned by Canis Media. + +Festivals + +Criticism + +Subgenres misrepresented on streaming services +Computer science and music experts identified issues with algorithms on streaming services such as Spotify and Apple Music, specifically the categorical homogenization of music curation and metadata within larger genres such as country music. Musicians and songs from minority heritage styles, such as Appalachian, Cajun, New Mexico, and Tejano music, underperform on these platforms due to underrepresentation and miscategorization of these subgenres. + +Race issue in modern country music +The Country Music Association has awarded the New Artist award to a black American only twice in 63 years, and never to a Hispanic musician. The broader modern Nashville-based Country music industry has underrepresented significant black and Latino contributions within Country music, including popular subgenres such as Cajun, Creole, Tejano, and New Mexico music. A 2021 CNN article states, "Some in country music have signaled that they are no longer content to be associated with a painful history of racism." + +Black country-music artist Mickey Guyton had been included among the nominees for the 2021 award, effectively creating a litmus-test for the genre. Guyton has expressed bewilderment that, despite substantial coverage by online platforms like Spotify and Apple Music, her music, like that of Valerie June, another black musician who embraces aspects of country in her Appalachian- and Gospel-tinged work and who has been embraced by international music audiences, is still effectively ignored by American broadcast country-music radio. Guyton's 2021 album Remember Her Name in part references the case of black health-care professional Breonna Taylor, who was killed in her home by police. + +In 2023, "Try That in a Small Town" by Jason Aldean became the subject of widespread controversy and media attention following the release of its music video. Tennessee state representative Justin Jones referred to the song as a "heinous vile racist song" which attempts to normalize "racist, violence, vigilantism and white nationalism". Others thought the lyrics were supportive of lynchings and sundown towns. Amanda Marie Martinez of NPR wrote that the song "builds on a lineage of anti-city songs in country music that place the rural and urban along not only a moral versus immoral binary, but an implicitly racialized one as well...selective availability of home loans in suburbs and racially restrictive housing covenants in cities furthered white flight, making cities synonymous with non-whiteness." She concluded by stating that such songs are "why country music continues to be a frightening space for marginalized communities". + +See also + + American Country Countdown Awards + Canadian Country Music Association + CMT Music Awards + Country (identity) + Country and Irish + Country Music Hall of Fame and Museum + Country-western dance + Culture of the Southern United States + Music genre + List of country music performers + List of RPM number-one country singles + Music of the United States + Pop music + Western Music Association + 2021 in country music + +References + +Further reading + + + + + + + + Thomas S. Johnson (1981) "That Ain't Country: The Distinctiveness of Commercial Western Music" JEMF Quarterly. Vol. 17, No. 62. Summer, 1981. pp 75–84. + + + Bill Legere (1977). Record Collectors Guide of Country LPs. Limited ed. Mississauga, Ont.: W.J. Legere. 269, 25, 29, 2 p., thrice perforated and looseleaf. Without ISBN + Bill Legere ([1977]). E[lectrical] T[anscription]s: Transcription Library of Bill Legere. Mississauga, Ont.: B. Legere. 3 vols., each of which is thrice perforated and looseleaf. N.B.: Vol. 1–2, Country Artists—vol. 2, Pop Artists. Without ISBN + + + Diane Pecknold (ed.) Hidden in the Mix: The African American Presence in Country Music. Durham, NC: Duke University Press, 2013. + +External links + + The Country Music Association – Nashville, Tennessee(CMA) + Western Music Association (WMA) + Country Music Hall of Fame and Museum – Nashville, Tennessee + Grand Ole Opry – Nashville, Tennessee + Irish country music + Country Music Festivals Ontario Website + Nashville Songwriters Hall of Fame Foundation + TIME Archive of country music's progression + Xroad.virginia.edu, alt country from American Studies at the University of Virginia + Largest collection of online Country music radio stations + Kingwood Kowboy's History Of Country Music + A Treasure Trove for Country Music Collectors. The British Archive of Country Music Records, BACM, is dedicated to the preservation of traditional country music + +2021 +1920s in music +1930s in music +1940s in music +1950s in music +1960s in music +1970s in music +1980s in music +1990s in music +2000s in music +2010s in music +2020s in music +American styles of music +Culture of the Southern United States +Radio formats +The Cold War (1948–1953) is the period within the Cold War from the incapacitation of the Allied Control Council in 1948 to the conclusion of the Korean War in 1953. + +The list of world leaders in these years is as follows: + 1948–49: Clement Attlee (UK); Harry Truman (US); Vincent Auriol (France); Joseph Stalin (USSR); Chiang Kai-shek (Allied China) + 1950–51: Clement Attlee (UK); Harry Truman (US); Vincent Auriol (France); Joseph Stalin (USSR); Mao Zedong (China) + 1952–53: Winston Churchill (UK); Harry Truman (US); Vincent Auriol (France); Joseph Stalin (USSR); Mao Zedong (China) + +Europe + +Berlin Blockade + +After the Marshall Plan, the introduction of a new currency to Western Germany to replace the debased Reichsmark and massive electoral losses for communist parties in 1946, in June 1948, the Soviet Union cut off surface road access to Berlin. + +On the day of the Berlin Blockade, a Soviet representative told the other occupying powers "We are warning both you and the population of Berlin that we shall apply economic and administrative sanctions that will lead to circulation in Berlin exclusively of the currency of the Soviet occupation zone." + +Thereafter, street and water communications were severed, rail and barge traffic was stopped and the Soviets initially stopped supplying food to the civilian population in the non-Soviet sectors of Berlin. Because Berlin was located within the Soviet-occupied zone of Germany and the other occupying powers had previously relied on Soviet good will for access to Berlin, the only available methods of supplying the city were three limited air corridors. + +By February 1948, because of massive post-war military cuts, the entire United States army had been reduced to 552,000 men. Military forces in non-Soviet Berlin sectors totaled only 8,973 Americans, 7,606 British and 6,100 French. Soviet military forces in the Soviet sector that surrounded Berlin totaled one and a half million men. The two United States regiments in Berlin would have provided little resistance against a Soviet attack. Believing that Britain, France and the United States had little option other than to acquiesce, the Soviet Military Administration in Germany celebrated the beginning of the blockade. Thereafter, a massive aerial supply campaign of food, water and other goods was initiated by the United States, Britain, France and other countries. The Soviets derided "the futile attempts of the Americans to save face and to maintain their untenable position in Berlin." The success of the airlift eventually caused the Soviets to lift their blockade in May 1949. + +However, the Soviet Army was still capable of conquering Western Europe without much difficulty. In September 1948, US military intelligence experts estimated that the Soviets had about 485,000 troops in their German occupation zone and in Poland, and some 1.785 million troops in Europe in total. At the same time, the number of US troops in 1948 was about 140,000. + +Tito–Stalin Split + +After disagreements between Yugoslavian leader Josip Broz Tito and the Soviet Union regarding Greece and the People's Republic of Albania, a Tito–Stalin Split occurred, followed by Yugoslavia being expelled from the Cominform in June 1948 and a brief failed Soviet putsch in Belgrade. The split created two separate communist forces in Europe. A vehement campaign against "Titoism" was immediately started in the Eastern Bloc, describing agents of both the West and Tito in all places engaging in subversive activity. This resulted in the persecution of many major party cadres, including those in East Germany. + +was split up and dissolved in 1954 and 1975, also because of the détente between the West and Tito. + +NATO + +The United States joined Britain, France, Canada, Denmark, Portugal, Norway, Belgium, Iceland, Luxembourg, Italy, and the Netherlands in 1949 to form the North Atlantic Treaty Organization (NATO), the United States' first "entangling" European alliance in 170 years. West Germany, Spain, Greece, and Turkey would later join this alliance. The Eastern leaders retaliated against these steps by integrating the economies of their nations in Comecon, their version of the Marshall Plan; exploding the first Soviet atomic device in 1949; signing an alliance with People's Republic of China in February 1950; and forming the Warsaw Pact, Eastern Europe's counterpart to NATO, in 1955. The Soviet Union, Albania, Czechoslovakia, Hungary, East Germany, Bulgaria, Romania, and Poland founded this military alliance. + +NSC 68 +U.S. officials quickly moved to escalate and expand "containment." In a secret 1950 document, NSC 68, they proposed to strengthen their alliance systems, quadruple defense spending, and embark on an elaborate propaganda campaign to convince the U.S. public to fight this costly cold war. Truman ordered the development of a hydrogen bomb. In early 1950, the U.S. took its first efforts to oppose communist forces in Vietnam; planned to form a West German army, and prepared proposals for a peace treaty with Japan that would guarantee long-term U.S. military bases there. + +Outside Europe +The Cold War took place worldwide, but it had a partially different timing and trajectory outside Europe. + +In Africa, decolonization took place first; it was largely accomplished in the 1950s. The main rivals then sought bases of support in the new national political alignments. In Latin America, the first major confrontation took place in Guatemala in 1954. When the new Castro government of Cuba turned to Soviets support in 1960, Cuba became the center of the anti-American Cold War forces, supported by the Soviet Union. + +Chinese Civil War + +As Japan's empire collapsed in 1945 the civil war resumed in China between the Kuomintang (KMT) led by Generalissimo Chiang Kai-shek and the Chinese Communist Party led by Mao Zedong. The USSR had signed a Treaty of Friendship with the Kuomintang in 1945 and disavowed support for the Chinese Communists. The outcome was closely fought, with the Communists finally prevailing with superior military tactics. Although the Nationalists had an advantage in numbers of men and weapons, initially controlled a much larger territory and population than their adversaries, and enjoyed considerable international support, they were exhausted by the long war with Japan and the attendant internal responsibilities. In addition, the Chinese Communists were able to fill the political vacuum left in Manchuria after Soviet forces withdrew from the area and thus gained China's prime industrial base. The Chinese Communists were able to fight their way from the north and northeast, and virtually all of mainland China was taken by the end of 1949. On October 1, 1949, Mao Zedong proclaimed the People's Republic of China (PRC). Chiang Kai-shek and 600,000 Nationalist troops and 2 million refugees, predominantly from the government and business community, fled from the mainland to the island of Taiwan. In December 1949, Chiang proclaimed Taipei the temporary capital of the Republic of China (ROC) and continued to assert his government as the sole legitimate authority in China. + +The continued hostility between the Communists on the mainland and the Nationalists on Taiwan continued throughout the Cold War. Though the United States refused to aide Chiang Kai-shek in his hope to "recover the mainland," it continued supporting the Republic of China with military supplies and expertise to prevent Taiwan from falling into PRC hands. Through the support of the Western bloc (most Western countries continued to recognize the ROC as the sole legitimate government of China), the Republic of China on Taiwan retained China's seat in the United Nations until 1971. + +Madiun Affair +Madiun Affair took place on September 18, 1948 in the city of Madiun, East Java. This rebellion was carried out by the Front Demokrasi Rakyat (FDR, People's Democratic Front) which united all socialist and communist groups in Indonesia. This rebellion ended 3 months later after its leaders were arrested and executed by the TNI. + +This revolt began with the fall of the Amir Syarifuddin Cabinet due to the signing of the Renville Agreement which benefited the Dutch and was eventually replaced by the Hatta Cabinet which did not belong to the left wing. This led Amir Syarifuddin to declare opposition to the Hatta Cabinet government and to declare the formation of the People's Democratic Front. + +Before it, In the PKI Politburo session on August 13–14, 1948, Musso, an Indonesian communist figure, introduced a political concept called "Jalan Baru". He also wanted a single Marxism party called the PKI (Communist Party of Indonesia) consisting of illegal communists, the Labour Party of Indonesia, and Partai Sosialis(Socialist Party). + +On September 18, 1948, the FDR declared the formation of the Republic of Soviet-Indonesia. In addition, the communists also carried out a rebellion in the Pati Residency and the kidnapping of groups who were considered to be against communists. Even this rebellion resulted in the murder of the Governor of East Java at the time, Raden Mas Tumenggung Ario Soerjo. + +The crackdown operation against this movement began. This operation was led by A.H. Nasution. The Indonesian government also applied Commander General Sudirman to the Military Operations Movement I where General Sudirman ordered Colonel Gatot Soebroto and Colonel Sungkono to mobilize the TNI and police to crush the rebellion. + +On September 30, 1948, Madiun was captured again by the Republic of Indonesia. Musso was shot dead on his escape in Sumoroto and Amir Syarifuddin was executed after being captured in Central Java. In early December 1948, the Madiun Affair crackdown was declared complete. + +Korean War + +In early 1950, the United States made its first commitment to form a peace treaty with Japan that would guarantee long-term U.S. military bases. Some observers (including George Kennan) believed that the Japanese treaty led Stalin to approve a plan to invade U.S.-supported South Korea on June 25, 1950. Korea had been divided at the end of World War II along the 38th parallel into Soviet and U.S. occupation zones, in which a communist government was installed in the North by the Soviets, and an elected government in the South came to power after UN-supervised elections in 1948. + +In June 1950, Kim Il Sung's North Korean People's Army invaded South Korea. Fearing that communist Korea under a Kim Il Sung dictatorship could threaten Japan and foster other communist movements in Asia, Truman committed U.S. forces and obtained help from the United Nations to counter the North Korean invasion. The Soviets boycotted UN Security Council meetings while protesting the Council's failure to seat the People's Republic of China and, thus, did not veto the Council's approval of UN action to oppose the North Korean invasion. A joint UN force of personnel from South Korea, the United States, Britain, Turkey, Canada, Australia, France, the Philippines, the Netherlands, Belgium, New Zealand and other countries joined to stop the invasion. After a Chinese invasion to assist the North Koreans, fighting stabilized along the 38th parallel, which had separated the Koreas. Truman faced a hostile China, a Sino-Soviet partnership, and a defense budget that had quadrupled in eighteen months. + +The Korean Armistice Agreement was signed in July 1953 after the death of Stalin, who had been insisting that the North Koreans continue fighting. In North Korea, Kim Il Sung created a highly centralized and brutal dictatorship, according himself unlimited power and generating a formidable cult of personality. + +Hydrogen bomb +A hydrogen bomb—which produced nuclear fusion instead of nuclear fission—was first tested by the United States in November 1952 and the Soviet Union in August 1953. Such bombs were first deployed in the 1960s. + +Culture and media + +Fear of a nuclear war spurred the production of public safety films by the United States federal government's Civil Defense branch that demonstrated ways on protecting oneself from a Soviet nuclear attack. The 1951 children's film Duck and Cover is a prime example. + +George Orwell's classic dystopia Nineteen Eighty-Four was published in 1949. The novel explores life in an imagined future world where a totalitarian government has achieved terrifying levels of power and control. With Nineteen Eighty-Four, Orwell taps into the anti-communist fears that would continue to haunt so many in the West for decades to come. In a Cold War setting his descriptions could hardly fail to evoke comparison to Soviet communism and the seeming willingness of Stalin and his successors to control those within the Soviet bloc by whatever means necessary. Orwell's famous allegory of totalitarian rule, Animal Farm, published in 1945, provoked similar anti-communist sentiments. + +See also + Western Union + History of the Soviet Union (1927–1953) + History of the United States (1945–1964) + Timeline of events in the Cold War + Animal Farm + +Notes + +References + Ball, S. J. The Cold War: An International History, 1947–1991 (1998). British perspective + + Brzezinski, Zbigniew. The Grand Failure: The Birth and Death of Communism in the Twentieth Century (1989); + Brune, Lester Brune and Richard Dean Burns. Chronology of the Cold War: 1917–1992 (2005) 700pp; highly detailed month-by-month summary for many countries + + + + + Gaddis, John Lewis. The Cold War: A New History (2005) + Gaddis, John Lewis. Long Peace: Inquiries into the History of the Cold War (1987) + Gaddis, John Lewis. Strategies of Containment: A Critical Appraisal of Postwar American National Security Policy (1982) + + + + LaFeber, Walter. America, Russia, and the Cold War, 1945–1992 7th ed. (1993) + Lewkowicz, Nicolas (2018) The United States, the Soviet Union and the Geopolitical Implications of the Origins of the Cold War, Anthem Press, London + + + + Mitchell, George. The Iron Curtain: The Cold War in Europe (2004) + + + Ninkovich, Frank. Germany and the United States: The Transformation of the German Question since 1945 (1988) + Paterson, Thomas G. Meeting the Communist Threat: Truman to Reagan (1988) + + + + Sivachev, Nikolai and Nikolai Yakolev, Russia and the United States (1979), by Soviet historians + + + Ulam, Adam B. Expansion and Coexistence: Soviet Foreign Policy, 1917–1973, 2nd ed. (1974) + Walker, J. Samuel. "Historians and Cold War Origins: The New Consensus", in Gerald K. Haines and J. Samuel Walker, eds., American Foreign Relations: A Historiographical Review (1981), 207–236. + + Cumings, Bruce The Origins of the Korean War (2 vols., 1981–90), friendly to North Korea and hostile to U.S. + Holloway, David. Stalin and the Bomb: The Soviet Union and Atomic Energy, 1959-1956 (1994) + Goncharov, Sergei, John Lewis and Xue Litai, Uncertain Partners: Stalin, Mao and the Korean War (1993) + Leffler, Melvyn. A Preponderance of Power: National Security, the Truman Administration and the Cold War (1992). + Mastny, Vojtech. Russia's Road to the Cold War: Diplomacy, Warfare, and the Politics of Communism, 1941–1945 (1979) + Zhang, Shu Guang. Beijing's Economic Statecraft during the Cold War, 1949-1991 (2014). online review + +External links + Draft, Report on Communist Expansion, February 28, 1947 + The division of Europe on CVCE website + James F. Byrnes, Speaking Frankly The division of Germany. From BYRNES, James F. Speaking Frankly. New York: Harper and Brothers Publishers, 1947. 324 p, Available on the CVCE website. + The beginning of the Cold War on CVCE website + The Sinews of Peace Winston Churchill speech in 5, March, 1946, warning about the advance of communism in central Europe. Sound extract on the CVCE website. + Dividing up Europe The 1944 division of Europe between the Soviet Union and Britain into zones of influence. On CVCE website + James Francis Byrnes and U.S. Policy towards Germany 1945–1947 Deutsch-Amerikanische Zentrum / James-F.-Byrnes-Institut e.V + UK Policy towards Germany National Archives excerpts of Cabinet meetings. + Royal Engineers Museum Royal Engineers and the Cold War + Cold War overview + +Cold War by period +1947 in international relations +1948 in international relations +1949 in international relations +1950 in international relations +1951 in international relations +1952 in international relations +1953 in international relations +Crony capitalism sometimes also called simply cronyism, is a pejorative term used in political discourse to describe a situation in which businesses profit from a close relationship with state power, either through an anti-competitive regulatory environment, direct government largesse, and/or corruption. Examples given for crony capitalism include obtainment of permits, government grants, tax breaks, or other undue influence from businesses over the state's deployment of public goods, for example, mining concessions for primary commodities or contracts for public works. In other words, it is used to describe a situation where businesses thrive not as a result of free enterprise, but rather collusion between a business class and the political class. + +Money is then made not merely by making a profit in the market, but through profiteering by rent seeking using this monopoly or oligopoly. Entrepreneurship and innovative practices which seek to reward risk are stifled since the value-added is little by crony businesses, as hardly anything of significant value is created by them, with transactions taking the form of trading. Crony capitalism spills over into the government, the politics, and the media, when this nexus distorts the economy and affects society to an extent it corrupts public-serving economic, political, and social ideals. + +Historical usage +The first extensive use of the term "crony capitalism" came about in the 1980s, to characterize the Philippine economy under the dictatorship of Ferdinand Marcos. Early uses of this term to describe the economic practices of the Marcos regime included that of Ricardo Manapat, who introduced it in his 1979 pamphlet "Some are Smarter than Others", which was later published in 1991; former Time magazine business editor George M. Taber, who used the term in a Time magazine article in 1980, and activist (and later Finance Minister) Jaime Ongpin, who used the term extensively in his writing and is sometimes credited for having coined it. + +The term crony capitalism made a significant impact in the public as an explanation of the Asian financial crisis. + +It is also used to describe governmental decisions favoring cronies of governmental officials. + +The term is used largely interchangeably with the related term corporate welfare, although the latter is by definition specific to corporations. + +In practice + +Crony capitalism exists along a continuum. In its lightest form, crony capitalism consists of collusion among market players which is officially tolerated or encouraged by the government. While perhaps lightly competing against each other, they will present a unified front (sometimes called a trade association or industry trade group) to the government in requesting subsidies or aid or regulation. For instance, newcomers to a market then need to surmount significant barriers to entry in seeking loans, acquiring shelf space, or receiving official sanction. Some such systems are very formalized, such as sports leagues and the Medallion System of the taxicabs of New York City, but often the process is more subtle, such as expanding training and certification exams to make it more expensive for new entrants to enter a market and thereby limiting potential competition. In technological fields, there may evolve a system whereby new entrants may be accused of infringing on patents that the established competitors never assert against each other. In spite of this, some competitors may succeed when the legal barriers are light. The term crony capitalism is generally used when these practices either come to dominate the economy as a whole, or come to dominate the most valuable industries in an economy. Intentionally ambiguous laws and regulations are common in such systems. Taken strictly, such laws would greatly impede practically all business activity, but in practice they are only erratically enforced. The specter of having such laws suddenly brought down upon a business provides an incentive to stay in the good graces of political officials. Troublesome rivals who have overstepped their bounds can have these laws suddenly enforced against them, leading to fines or even jail time. Even in high-income democracies with well-established legal systems and freedom of the press in place, a larger state is generally associated with increased political corruption. + +The term crony capitalism was initially applied to states involved in the 1997 Asian financial crisis such as Indonesia, South Korea and Thailand. In these cases, the term was used to point out how family members of the ruling leaders become extremely wealthy with no non-political justification. Southeast Asian nations, such as Hong Kong and Malaysia, still score very poorly in rankings measuring this. It was also used in this context as part of a broader liberal critique of economic dirigisme. The term has also been applied to the system of oligarchs in Russia. Other states to which the term has been applied include India, in particular the system after the 1990s liberalization, whereby land and other resources were given at throwaway prices in the name of public private partnerships, the more recent coal-gate scam and cheap allocation of land and resources to Adani SEZ under the Congress and BJP governments. +Similar references to crony capitalism have been made to other countries such as Argentina and Greece. Wu Jinglian, one of China's leading economists and a longtime advocate of its transition to free markets, says that it faces two starkly contrasting futures, namely a market economy under the rule of law or crony capitalism. A dozen years later, prominent political scientist Pei Minxin had concluded that the latter course had become deeply embedded in China. The anti-corruption campaign under Xi Jinping (2012–) has seen more than 100,000 high- and low-ranking Chinese officials indicted and jailed. + +Many prosperous nations have also had varying amounts of cronyism throughout their history, including the United Kingdom especially in the 1600s and 1700s, the United States and Japan. + +Crony capitalism index +The Economist benchmarks countries based on a crony-capitalism index calculated via how much economic activity occurs in industries prone to cronyism. Its 2014 Crony Capitalism Index ranking listed Hong Kong, Russia and Malaysia in the top three spots. + +In finance +Crony capitalism in finance was found in the Second Bank of the United States. It was a private company, but its largest stockholder was the federal government which owned 20%. It was an early bank regulator and grew to be one being the most powerful organizations in the country due largely to being the depository of the government's revenue. + +The Gramm–Leach–Bliley Act in 1999 completely removed Glass–Steagall’s separation between commercial banks and investment banks. After this repeal, commercial banks, investment banks and insurance companies combined their lobbying efforts. Critics claim this was instrumental in the passage of the Bankruptcy Abuse Prevention and Consumer Protection Act of 2005. + +In sections of an economy + +More direct government involvement in a specific sector can also lead to specific areas of crony capitalism, even if the economy as a whole may be competitive. This is most common in natural resource sectors through the granting of mining or drilling concessions, but it is also possible through a process known as regulatory capture where the government agencies in charge of regulating an industry come to be controlled by that industry. Governments will often establish in good faith government agencies to regulate an industry. However, the members of an industry have a very strong interest in the actions of that regulatory body while the rest of the citizenry are only lightly affected. As a result, it is not uncommon for current industry players to gain control of the watchdog and to use it against competitors. This typically takes the form of making it very expensive for a new entrant to enter the market. An 1824 landmark United States Supreme Court ruling overturned a New York State-granted monopoly ("a veritable model of state munificence" facilitated by Robert R. Livingston, one of the Founding Fathers) for the then-revolutionary technology of steamboats. Leveraging the Supreme Court's establishment of Congressional supremacy over commerce, the Interstate Commerce Commission was established in 1887 with the intent of regulating railroad robber barons. President Grover Cleveland appointed Thomas M. Cooley, a railroad ally, as its first chairman and a permit system was used to deny access to new entrants and legalize price fixing. + +The defense industry in the United States is often described as an example of crony capitalism in an industry. Connections with the Pentagon and lobbyists in Washington are described by critics as more important than actual competition due to the political and secretive nature of defense contracts. In the Airbus-Boeing WTO dispute, Airbus (which receives outright subsidies from European governments) has stated Boeing receives similar subsidies which are hidden as inefficient defense contracts. Other American defense companies were put under scrutiny for no-bid contracts for Iraq War and Hurricane Katrina related contracts purportedly due to having cronies in the Bush administration. + +Gerald P. O'Driscoll, former vice president at the Federal Reserve Bank of Dallas, stated that Fannie Mae and Freddie Mac became examples of crony capitalism as government backing let Fannie and Freddie dominate mortgage underwriting, saying. "The politicians created the mortgage giants, which then returned some of the profits to the pols—sometimes directly, as campaign funds; sometimes as "contributions" to favored constituents". + +In developing economies +In its worst form, crony capitalism can devolve into simple corruption where any pretense of a free market is dispensed with, bribes to government officials are considered de rigueur and tax evasion is common. This is seen in many parts of Africa and is sometimes called plutocracy (rule by wealth) or kleptocracy (rule by theft). Kenyan economist David Ndii has repeatedly brought to light how this system has manifested over time, occasioned by the reign of Uhuru Kenyatta as president. + +Corrupt governments may favor one set of business owners who have close ties to the government over others. This may also be done with, religious, or ethnic favoritism. For instance, Alawites in Syria have a disproportionate share of power in the government and business there (President Assad himself is an Alawite). This can be explained by considering personal relationships as a social network. As government and business leaders try to accomplish various things, they naturally turn to other powerful people for support in their endeavors. These people form hubs in the network. In a developing country those hubs may be very few, thus concentrating economic and political power in a small interlocking group. + +Normally, this will be untenable to maintain in business as new entrants will affect the market. However, if business and government are entwined, then the government can maintain the small-hub network. + +Raymond Vernon, specialist in economics and international affairs, wrote that the Industrial Revolution began in Great Britain because they were the first to successfully limit the power of veto groups (typically cronies of those with power in government) to block innovations, writing: "Unlike most other national environments, the British environment of the early 19th century contained relatively few threats to those who improved and applied existing inventions, whether from business competitors, labor, or the government itself. In other European countries, by contrast, the merchant guilds ... were a pervasive source of veto for many centuries. This power was typically bestowed upon them by government." For example, a Russian inventor produced a steam engine in 1766 and disappeared without a trace. Vermon further stated that "a steam powered horseless carriage produced in France in 1769 was officially suppressed." James Watt began experimenting with steam in 1763, got a patent in 1769 and began commercial production in 1775. + +Raghuram Rajan, former governor of the Reserve Bank of India, has said: "One of the greatest dangers to the growth of developing countries is the middle income trap, where crony capitalism creates oligarchies that slow down growth. If the debate during the elections is any pointer, this is a very real concern of the public in India today". Tavleen Singh, columnist for The Indian Express, has disagreed. According to Singh, India's corporate success is not a product of crony capitalism, but because India is no longer under the influence of crony socialism. + +Political viewpoints + +While the problem is generally accepted across the political spectrum, ideology shades the view of the problem's causes and therefore its solutions. Political views mostly fall into two camps which might be called the socialist and capitalist critique. The socialist position is that crony capitalism is the inevitable result of any strictly capitalist system and thus broadly democratic government must regulate economic, or wealthy, interests to restrict monopoly. The capitalist position is that natural monopolies are rare, therefore governmental regulations generally abet established wealthy interests by restricting competition. + +Socialist critique +Critics of crony capitalism including socialists and anti-capitalists often assert that so-called crony capitalism is simply the inevitable result of any strictly capitalist system. Jane Jacobs described it as a natural consequence of collusion between those managing power and trade while Noam Chomsky has argued that the word crony is superfluous when describing capitalism. Since businesses make money and money leads to political power, business will inevitably use their power to influence governments. Much of the impetus behind campaign finance reform in the United States and in other countries is an attempt to prevent economic power being used to take political power. + +Ravi Batra argues that "all official economic measures adopted since 1981 ... have devastated the middle class" and that the Occupy Wall Street movement should push for their repeal and thus end the influence of the super wealthy in the political process which he considers a manifestation of crony capitalism. + +Socialist economists, such as Robin Hahnel, have criticized the term as an ideologically motivated attempt to cast what is in their view the fundamental problems of capitalism as avoidable irregularities. Socialist economists dismiss the term as an apologetic for failures of neoliberal policy and more fundamentally their perception of the weaknesses of market allocation. + +Capitalist critique +Supporters of capitalism also generally oppose crony capitalism. Further, supporters such as classical liberals, neoliberals and right-libertarians consider it an aberration brought on by governmental favors incompatible with free market.. In the capitalist view, cronyism is the result of an excess of interference in the market which inevitably will result in a toxic combination of corporations and government officials running sectors of the economy. For instance, the Financial Times observed that, in Vietnam during the 2010s, the primary beneficiaries of cronyism were Communist party officials, noting also the "common practice of employing only party members and their family members and associates to government jobs or to jobs in state-owned enterprises." + +Conservative commentator Ben Shapiro prefers to equate this problem with terms such as corporatocracy or corporatism, considered "a modern form of mercantilism", to emphasize that the only way to run a profitable business in such a system is to have help from corrupt government officials. Likewise, Hernando de Soto said that mercantilism "is also known as 'crony' or 'noninclusive' capitalism". + +Even if the initial regulation was well-intentioned (to curb actual abuses) and even if the initial lobbying by corporations was well-intentioned (to reduce illogical regulations), the mixture of business and government stifles competition, a collusive result called regulatory capture. Burton W. Folsom Jr. distinguishes those that engage in crony capitalism—designated by him political entrepreneurs—from those who compete in the marketplace without special aid from government, whom he calls market entrepreneurs. The market entrepreneurs such as James J. Hill, Cornelius Vanderbilt and John D. Rockefeller succeeded by producing a quality product at a competitive price. For example, the political entrepreneurs such as Edward Collins in steamships and the leaders of the Union Pacific Railroad in railroads were men who used the power of government to succeed. They tried to gain subsidies or in some way use government to stop competitors. + +See also + + Corporatocracy + Cronies of Ferdinand Marcos + Economic History of the Philippines under Ferdinand Marcos + Government failure + Government-owned corporation + Inverted totalitarianism + Iron triangle (US politics) + Licence Raj (concept in Indian political-economics) + Mercantilism + Patrimonialism + Political family + Political machine + Regulatory capture + Rent-seeking + Stamocap + State capture + Supercapitalism + Zhao family + +Notes + +References + +Further reading + + + + + + + + + + + + + + + + + Khatri, Naresh (2013). Anatomy of Indian Brand of Crony Capitalism. https://ssrn.com/abstract=2335201. + + http://mpra.ub.uni-muenchen.de/19626/1/WP0802.pdf + +Bribery +Capitalism +Management cybernetics +Political corruption +Political terminology +Public choice theory +This is a list of lists of universities and colleges. + +Subject of study + Aerospace engineering + Agriculture + Art schools + Business + Chiropractic + Engineering + Forestry + Law + Maritime studies + Medicine + Music + Nanotechnology + Osteopathy + Pharmaceuticals + Social Work + +Institution type + + Community colleges + For-profit universities and colleges + Land-grant universities + Liberal arts universities + National universities + Postgraduate-only institutions + Private universities + Public universities + Research universities + Technical universities + Sea-grant universities + Space-grant universities + State universities and colleges + Unaccredited universities + +Location + Lists of universities and colleges by country + List of largest universities + +Religious affiliation + + Assemblies of God + Baptist colleges and universities in the United States + Catholic universities + Ecclesiastical universities + Benedictine colleges and universities + Jesuit institutions + Opus Dei universities + Pontifical universities + International Council of Universities of Saint Thomas Aquinas + International Federation of Catholic Universities + Christian churches and churches of Christ + Churches of Christ + Church of the Nazarene + Islamic seminaries + Lutheran colleges and universities + International Association of Methodist-related Schools, Colleges, and Universities + Muslim educational institutions + Association of Presbyterian Colleges and Universities + +Extremities + Endowment + Largest universities by enrollment + Oldest madrasahs in continuous operation + Oldest universities in continuous operation + +Other + Colleges and universities named after people + +History + Medieval universities + Ancient universities in Britain and Ireland + +See also + + + + + + Lists of schools + Distance education +A constitution is the aggregate of fundamental principles or established precedents that constitute the legal basis of a polity, organization or other type of entity, and commonly determines how that entity is to be governed. + +When these principles are written down into a single document or set of legal documents, those documents may be said to embody a written constitution; if they are encompassed in a single comprehensive document, it is said to embody a codified constitution. The Constitution of the United Kingdom is a notable example of an uncodified constitution; it is instead written in numerous fundamental Acts of a legislature, court cases, or treaties. + +Constitutions concern different levels of organizations, from sovereign countries to companies and unincorporated associations. A treaty that establishes an international organization is also its constitution, in that it would define how that organization is constituted. Within states, a constitution defines the principles upon which the state is based, the procedure in which laws are made and by whom. Some constitutions, especially codified constitutions, also act as limiters of state power, by establishing lines which a state's rulers cannot cross, such as fundamental rights. + +The Constitution of India is the longest written constitution of any country in the world, with 146,385 words in its English-language version, while the Constitution of Monaco is the shortest written constitution with 3,814 words. The Constitution of San Marino might be the world's oldest active written constitution, since some of its core documents have been in operation since 1600, while the Constitution of the United States is the oldest active codified constitution. The historical life expectancy of a constitution since 1789 is approximately 19 years. + +Etymology +The term constitution comes through French from the Latin word , used for regulations and orders, such as the imperial enactments (constitutiones principis: edicta, mandata, decreta, rescripta). Later, the term was widely used in canon law for an important determination, especially a decree issued by the Pope, now referred to as an apostolic constitution. + +William Blackstone used the term for significant and egregious violations of public trust, of a nature and extent that the transgression would justify a revolutionary response. The term as used by Blackstone was not for a legal text, nor did he intend to include the later American concept of judicial review: "for that were to set the judicial power above that of the legislature, which would be subversive of all government". + +General features +Generally, every modern written constitution confers specific powers on an organization or institutional entity, established upon the primary condition that it abides by the constitution's limitations. According to Scott Gordon, a political organization is constitutional to the extent that it "contain[s] institutionalized mechanisms of power control for the protection of the interests and liberties of the citizenry, including those that may be in the minority". + +Activities of officials within an organization or polity that fall within the constitutional or statutory authority of those officials are termed "within power" (or, in Latin, intra vires); if they do not, they are termed "beyond power" (or, in Latin, ultra vires). For example, a students' union may be prohibited as an organization from engaging in activities not concerning students; if the union becomes involved in non-student activities, these activities are considered to be ultra vires of the union's charter, and nobody would be compelled by the charter to follow them. An example from the constitutional law of sovereign states would be a provincial parliament in a federal state trying to legislate in an area that the constitution allocates exclusively to the federal parliament, such as ratifying a treaty. Action that appears to be beyond power may be judicially reviewed and, if found to be beyond power, must cease. Legislation that is found to be beyond power will be "invalid" and of no force; this applies to primary legislation, requiring constitutional authorization, and secondary legislation, ordinarily requiring statutory authorization. In this context, "within power", intra vires, "authorized" and "valid" have the same meaning; as do "beyond power", ultra vires, "not authorized" and "invalid". + +In most but not all modern states the constitution has supremacy over ordinary statutory law (see Uncodified constitution below); in such states when an official act is unconstitutional, i.e. it is not a power granted to the government by the constitution, that act is null and void, and the nullification is ab initio, that is, from inception, not from the date of the finding. It was never "law", even though, if it had been a statute or statutory provision, it might have been adopted according to the procedures for adopting legislation. Sometimes the problem is not that a statute is unconstitutional, but that the application of it is, on a particular occasion, and a court may decide that while there are ways it could be applied that are constitutional, that instance was not allowed or legitimate. In such a case, only that application may be ruled unconstitutional. Historically, the remedies for such violations have been petitions for common law writs, such as quo warranto. + +Scholars debate whether a constitution must necessarily be autochthonous, resulting from the nations "spirit". Hegel said "A constitution...is the work of centuries; it is the idea, the consciousness of rationality so far as that consciousness is developed in a particular nation." + +History and development +Since 1789, along with the Constitution of the United States of America (U.S. Constitution), which is the oldest and shortest written constitution still in force, close to 800 constitutions have been adopted and subsequently amended around the world by independent states. + +In the late 18th century, Thomas Jefferson predicted that a period of 20 years would be the optimal time for any constitution to be still in force, since "the earth belongs to the living, and not to the dead". Indeed, according to recent studies, the average life of any new written constitution is around 19 years. However, a great number of constitutions do not last more than 10 years, and around 10% do not last more than one year, as was the case of the French Constitution of 1791. By contrast, some constitutions, notably that of the United States, have remained in force for several centuries, often without major revision for long periods of time. + +The most common reasons for these frequent changes are the political desire for an immediate outcome and the short time devoted to the constitutional drafting process. A study in 2009 showed that the average time taken to draft a constitution is around 16 months, however there were also some extreme cases registered. For example, the Myanmar 2008 Constitution was being secretly drafted for more than 17 years, whereas at the other extreme, during the drafting of Japan's 1946 Constitution, the bureaucrats drafted everything in no more than a week. Japan has the oldest unamended constitution in the world. The record for the shortest overall process of drafting, adoption, and ratification of a national constitution belongs to the Romania's 1938 constitution, which installed a royal dictatorship in less than a month. Studies showed that typically extreme cases where the constitution-making process either takes too long or is extremely short were non-democracies. Constitutional rights are not a specific characteristic of democratic countries. Non-democratic countries have constitutions, such as that of North Korea, which officially grants every citizen, among other rights, the freedom of expression. + +Pre-modern constitutions + +Ancient + +Excavations in modern-day Iraq by Ernest de Sarzec in 1877 found evidence of the earliest known code of justice, issued by the Sumerian king Urukagina of Lagash . Perhaps the earliest prototype for a law of government, this document itself has not yet been discovered; however it is known that it allowed some rights to his citizens. For example, it is known that it relieved tax for widows and orphans, and protected the poor from the usury of the rich. + +After that, many governments ruled by special codes of written laws. The oldest such document still known to exist seems to be the Code of Ur-Nammu of Ur (c. 2050 BC). Some of the better-known ancient law codes are the code of Lipit-Ishtar of Isin, the code of Hammurabi of Babylonia, the Hittite code, the Assyrian code, and Mosaic law. + +In 621 BC, a scribe named Draco codified the oral laws of the city-state of Athens; this code prescribed the death penalty for many offenses (thus creating the modern term "draconian" for very strict rules). In 594 BC, Solon, the ruler of Athens, created the new Solonian Constitution. It eased the burden of the workers, and determined that membership of the ruling class was to be based on wealth (plutocracy), rather than on birth (aristocracy). Cleisthenes again reformed the Athenian constitution and set it on a democratic footing in 508 BC. + +Aristotle (c. 350 BC) was the first to make a formal distinction between ordinary law and constitutional law, establishing ideas of constitution and constitutionalism, and attempting to classify different forms of constitutional government. The most basic definition he used to describe a constitution in general terms was "the arrangement of the offices in a state". In his works Constitution of Athens, Politics, and Nicomachean Ethics, he explores different constitutions of his day, including those of Athens, Sparta, and Carthage. He classified both what he regarded as good and what he regarded as bad constitutions, and came to the conclusion that the best constitution was a mixed system including monarchic, aristocratic, and democratic elements. He also distinguished between citizens, who had the right to participate in the state, and non-citizens and slaves, who did not. + +The Romans initially codified their constitution in 450 BC as the Twelve Tables. They operated under a series of laws that were added from time to time, but Roman law was not reorganized into a single code until the Codex Theodosianus (438 AD); later, in the Eastern Empire, the Codex repetitæ prælectionis (534) was highly influential throughout Europe. This was followed in the east by the Ecloga of Leo III the Isaurian (740) and the Basilica of Basil I (878). + +The Edicts of Ashoka established constitutional principles for the 3rd century BC Maurya king's rule in India. For constitutional principles almost lost to antiquity, see the code of Manu. + +Early Middle Ages + +Many of the Germanic peoples that filled the power vacuum left by the Western Roman Empire in the Early Middle Ages codified their laws. One of the first of these Germanic law codes to be written was the Visigothic Code of Euric (471 AD). This was followed by the Lex Burgundionum, applying separate codes for Germans and for Romans; the Pactus Alamannorum; and the Salic Law of the Franks, all written soon after 500. In 506, the Breviarum or "Lex Romana" of Alaric II, king of the Visigoths, adopted and consolidated the Codex Theodosianus together with assorted earlier Roman laws. Systems that appeared somewhat later include the Edictum Rothari of the Lombards (643), the Lex Visigothorum (654), the Lex Alamannorum (730), and the Lex Frisionum (c. 785). These continental codes were all composed in Latin, while Anglo-Saxon was used for those of England, beginning with the Code of Æthelberht of Kent (602). Around 893, Alfred the Great combined this and two other earlier Saxon codes, with various Mosaic and Christian precepts, to produce the Doom book code of laws for England. + +Japan's Seventeen-article constitution written in 604, reportedly by Prince Shōtoku, is an early example of a constitution in Asian political history. Influenced by Buddhist teachings, the document focuses more on social morality than on institutions of government, and remains a notable early attempt at a government constitution. + +The Constitution of Medina (, Ṣaḥīfat al-Madīna), also known as the Charter of Medina, was drafted by the Islamic prophet Muhammad after his flight (hijra) to Yathrib where he became political leader. It constituted a formal agreement between Muhammad and all of the significant tribes and families of Yathrib (later known as Medina), including Muslims, Jews, and pagans. The document was drawn up with the explicit concern of bringing to an end the bitter intertribal fighting between the clans of the Aws (Aus) and Khazraj within Medina. To this effect it instituted a number of rights and responsibilities for the Muslim, Jewish, and pagan communities of Medina bringing them within the fold of one community – the Ummah. The precise dating of the Constitution of Medina remains debated, but generally scholars agree it was written shortly after the Hijra (622). + +In Wales, the Cyfraith Hywel (Law of Hywel) was codified by Hywel Dda c. 942–950. + +Middle Ages after 1000 +The Pravda Yaroslava, originally combined by Yaroslav the Wise the Grand Prince of Kiev, was granted to Great Novgorod around 1017, and in 1054 was incorporated into the Russkaya Pravda; it became the law for all of Kievan Rus'. It survived only in later editions of the 15th century. + +In England, Henry I's proclamation of the Charter of Liberties in 1100 bound the king for the first time in his treatment of the clergy and the nobility. This idea was extended and refined by the English barony when they forced King John to sign Magna Carta in 1215. The most important single article of the Magna Carta, related to "habeas corpus", provided that the king was not permitted to imprison, outlaw, exile or kill anyone at a whim – there must be due process of law first. This article, Article 39, of the Magna Carta read: + +This provision became the cornerstone of English liberty after that point. The social contract in the original case was between the king and the nobility, but was gradually extended to all of the people. It led to the system of Constitutional Monarchy, with further reforms shifting the balance of power from the monarchy and nobility to the House of Commons. + +The Nomocanon of Saint Sava () was the first Serbian constitution from 1219. St. Sava's Nomocanon was the compilation of civil law, based on Roman Law, and canon law, based on Ecumenical Councils. Its basic purpose was to organize the functioning of the young Serbian kingdom and the Serbian church. Saint Sava began the work on the Serbian Nomocanon in 1208 while he was at Mount Athos, using The Nomocanon in Fourteen Titles, Synopsis of Stefan the Efesian, Nomocanon of John Scholasticus, and Ecumenical Council documents, which he modified with the canonical commentaries of Aristinos and Joannes Zonaras, local church meetings, rules of the Holy Fathers, the law of Moses, the translation of Prohiron, and the Byzantine emperors' Novellae (most were taken from Justinian's Novellae). The Nomocanon was a completely new compilation of civil and canonical regulations, taken from Byzantine sources but completed and reformed by St. Sava to function properly in Serbia. Besides decrees that organized the life of church, there are various norms regarding civil life; most of these were taken from Prohiron. Legal transplants of Roman-Byzantine law became the basis of the Serbian medieval law. The essence of Zakonopravilo was based on Corpus Iuris Civilis. + +Stefan Dušan, emperor of Serbs and Greeks, enacted Dušan's Code () in Serbia, in two state congresses: in 1349 in Skopje and in 1354 in Serres. It regulated all social spheres, so it was the second Serbian constitution, after St. Sava's Nomocanon (Zakonopravilo). The Code was based on Roman-Byzantine law. The legal transplanting within articles 171 and 172 of Dušan's Code, which regulated the juridical independence, is notable. They were taken from the Byzantine code Basilika (book VII, 1, 16–17). + +In 1222, Hungarian King Andrew II issued the Golden Bull of 1222. + +Between 1220 and 1230, a Saxon administrator, Eike von Repgow, composed the Sachsenspiegel, which became the supreme law used in parts of Germany as late as 1900. + +Around 1240, the Coptic Egyptian Christian writer, 'Abul Fada'il Ibn al-'Assal, wrote the Fetha Negest in Arabic. 'Ibn al-Assal took his laws partly from apostolic writings and Mosaic law and partly from the former Byzantine codes. There are a few historical records claiming that this law code was translated into Ge'ez and entered Ethiopia around 1450 in the reign of Zara Yaqob. Even so, its first recorded use in the function of a constitution (supreme law of the land) is with Sarsa Dengel beginning in 1563. The Fetha Negest remained the supreme law in Ethiopia until 1931, when a modern-style Constitution was first granted by Emperor Haile Selassie I. + +In the Principality of Catalonia, the Catalan constitutions were promulgated by the Court from 1283 (or even two centuries before, if Usatges of Barcelona is considered part of the compilation of Constitutions) until 1716, when Philip V of Spain gave the Nueva Planta decrees, finishing with the historical laws of Catalonia. These Constitutions were usually made formally as a royal initiative, but required for its approval or repeal the favorable vote of the Catalan Courts, the medieval antecedent of the modern Parliaments. These laws, like other modern constitutions, had preeminence over other laws, and they could not be contradicted by mere decrees or edicts of the king. + +The Kouroukan Founga was a 13th-century charter of the Mali Empire, reconstructed from oral tradition in 1988 by Siriman Kouyaté. + +The Golden Bull of 1356 was a decree issued by a Reichstag in Nuremberg headed by Emperor Charles IV that fixed, for a period of more than four hundred years, an important aspect of the constitutional structure of the Holy Roman Empire. + +In China, the Hongwu Emperor created and refined a document he called Ancestral Injunctions (first published in 1375, revised twice more before his death in 1398). These rules served as a constitution for the Ming Dynasty for the next 250 years. + +The oldest written document still governing a sovereign nation today is that of San Marino. The Leges Statutae Republicae Sancti Marini was written in Latin and consists of six books. The first book, with 62 articles, establishes councils, courts, various executive officers, and the powers assigned to them. The remaining books cover criminal and civil law and judicial procedures and remedies. Written in 1600, the document was based upon the Statuti Comunali (Town Statute) of 1300, itself influenced by the Codex Justinianus, and it remains in force today. + +In 1392 the Carta de Logu was legal code of the Giudicato of Arborea promulgated by the giudicessa Eleanor. It was in force in Sardinia until it was superseded by the code of Charles Felix in April 1827. The Carta was a work of great importance in Sardinian history. It was an organic, coherent, and systematic work of legislation encompassing the civil and penal law. + +The Gayanashagowa, the oral constitution of the Haudenosaunee nation also known as the Great Law of Peace, established a system of governance as far back as 1190 AD (though perhaps more recently at 1451) in which the Sachems, or tribal chiefs, of the Iroquois League's member nations made decisions on the basis of universal consensus of all chiefs following discussions that were initiated by a single nation. The position of Sachem descends through families and are allocated by the senior female clan heads, though, prior to the filling of the position, candidacy is ultimately democratically decided by the community itself. + +Modern constitutions + +In 1634 the Kingdom of Sweden adopted the 1634 Instrument of Government, drawn up under the Lord High Chancellor of Sweden Axel Oxenstierna after the death of king Gustavus Adolphus, it can be seen as the first written constitution adopted by a modern state. + +In 1639, the Colony of Connecticut adopted the Fundamental Orders, which was the first North American constitution, and is the basis for every new Connecticut constitution since, and is also the reason for Connecticut's nickname, "the Constitution State". + +The English Protectorate that was set up by Oliver Cromwell after the English Civil War promulgated the first detailed written constitution adopted by a modern state; it was called the Instrument of Government. This formed the basis of government for the short-lived republic from 1653 to 1657 by providing a legal rationale for the increasing power of Cromwell after Parliament consistently failed to govern effectively. Most of the concepts and ideas embedded into modern constitutional theory, especially bicameralism, separation of powers, the written constitution, and judicial review, can be traced back to the experiments of that period. + +Drafted by Major-General John Lambert in 1653, the Instrument of Government included elements incorporated from an earlier document "Heads of Proposals", which had been agreed to by the Army Council in 1647, as a set of propositions intended to be a basis for a constitutional settlement after King Charles I was defeated in the First English Civil War. Charles had rejected the propositions, but before the start of the Second Civil War, the Grandees of the New Model Army had presented the Heads of Proposals as their alternative to the more radical Agreement of the People presented by the Agitators and their civilian supporters at the Putney Debates. + +On January 4, 1649, the Rump Parliament declared "that the people are, under God, the original of all just power; that the Commons of England, being chosen by and representing the people, have the supreme power in this nation". + +The Instrument of Government was adopted by Parliament on December 15, 1653, and Oliver Cromwell was installed as Lord Protector on the following day. The constitution set up a state council consisting of 21 members while executive authority was vested in the office of "Lord Protector of the Commonwealth." This position was designated as a non-hereditary life appointment. The Instrument also required the calling of triennial Parliaments, with each sitting for at least five months. + +The Instrument of Government was replaced in May 1657 by England's second, and last, codified constitution, the Humble Petition and Advice, proposed by Sir Christopher Packe. The Petition offered hereditary monarchy to Oliver Cromwell, asserted Parliament's control over issuing new taxation, provided an independent council to advise the king and safeguarded "Triennial" meetings of Parliament. A modified version of the Humble Petition with the clause on kingship removed was ratified on 25 May. This finally met its demise in conjunction with the death of Cromwell and the Restoration of the monarchy. + +Other examples of European constitutions of this era were the Corsican Constitution of 1755 and the Swedish Constitution of 1772. + +All of the British colonies in North America that were to become the 13 original United States, adopted their own constitutions in 1776 and 1777, during the American Revolution (and before the later Articles of Confederation and United States Constitution), with the exceptions of Massachusetts, Connecticut and Rhode Island. The Commonwealth of Massachusetts adopted its Constitution in 1780, the oldest still-functioning constitution of any U.S. state; while Connecticut and Rhode Island officially continued to operate under their old colonial charters, until they adopted their first state constitutions in 1818 and 1843, respectively. + +Democratic constitutions + +What is sometimes called the "enlightened constitution" model was developed by philosophers of the Age of Enlightenment such as Thomas Hobbes, Jean-Jacques Rousseau, and John Locke. The model proposed that constitutional governments should be stable, adaptable, accountable, open and should represent the people (i.e., support democracy). + +Agreements and Constitutions of Laws and Freedoms of the Zaporizian Host was written in 1710 by Pylyp Orlyk, hetman of the Zaporozhian Host. It was written to establish a free Zaporozhian-Ukrainian Republic, with the support of Charles XII of Sweden. It is notable in that it established a democratic standard for the separation of powers in government between the legislative, executive, and judiciary branches, well before the publication of Montesquieu's Spirit of the Laws. This Constitution also limited the executive authority of the hetman, and established a democratically elected Cossack parliament called the General Council. However, Orlyk's project for an independent Ukrainian State never materialized, and his constitution, written in exile, never went into effect. + +Corsican Constitutions of 1755 and 1794 were inspired by Jean-Jacques Rousseau. The latter introduced universal suffrage for property owners. + +The Swedish constitution of 1772 was enacted under King Gustavus III and was inspired by the separation of powers by Montesquieu. The king also cherished other enlightenment ideas (as an enlighted despot) and repealed torture, liberated agricultural trade, diminished the use of the death penalty and instituted a form of religious freedom. The constitution was commended by Voltaire. + +The United States Constitution, ratified June 21, 1788, was influenced by the writings of Polybius, Locke, Montesquieu, and others. The document became a benchmark for republicanism and codified constitutions written thereafter. + +The Polish–Lithuanian Commonwealth Constitution was passed on May 3, 1791. Its draft was developed by the leading minds of the Enlightenment in Poland such as King Stanislaw August Poniatowski, Stanisław Staszic, Scipione Piattoli, Julian Ursyn Niemcewicz, Ignacy Potocki and Hugo Kołłątaj. It was adopted by the Great Sejm and is considered the first constitution of its kind in Europe and the world's second oldest one after the American Constitution. + +Another landmark document was the French Constitution of 1791. + +The 1811 Constitution of Venezuela was the first Constitution of Venezuela and Latin America, promulgated and drafted by Cristóbal Mendoza and Juan Germán Roscio and in Caracas. It established a federal government but was repealed one year later. + +On March 19, the Spanish Constitution of 1812 was ratified by a parliament gathered in Cadiz, the only Spanish continental city which was safe from French occupation. The Spanish Constitution served as a model for other liberal constitutions of several South European and Latin American nations, for example, the Portuguese Constitution of 1822, constitutions of various Italian states during Carbonari revolts (i.e., in the Kingdom of the Two Sicilies), the Norwegian constitution of 1814, or the Mexican Constitution of 1824. + +In Brazil, the Constitution of 1824 expressed the option for the monarchy as political system after Brazilian Independence. The leader of the national emancipation process was the Portuguese prince Pedro I, elder son of the king of Portugal. Pedro was crowned in 1822 as first emperor of Brazil. The country was ruled by Constitutional monarchy until 1889, when it adopted the Republican model. + +In Denmark, as a result of the Napoleonic Wars, the absolute monarchy lost its personal possession of Norway to Sweden. Sweden had already enacted its 1809 Instrument of Government, which saw the division of power between the Riksdag, the king and the judiciary. However the Norwegians managed to infuse a radically democratic and liberal constitution in 1814, adopting many facets from the American constitution and the revolutionary French ones, but maintaining a hereditary monarch limited by the constitution, like the Spanish one. + +The first Swiss Federal Constitution was put in force in September 1848 (with official revisions in 1878, 1891, 1949, 1971, 1982 and 1999). + +The Serbian revolution initially led to a proclamation of a proto-constitution in 1811; the full-fledged Constitution of Serbia followed few decades later, in 1835. The first Serbian constitution (Sretenjski ustav) was adopted at the national assembly in Kragujevac on February 15, 1835. + +The Constitution of Canada came into force on July 1, 1867, as the British North America Act, an act of the British Parliament. Over a century later, the BNA Act was patriated to the Canadian Parliament and augmented with the Canadian Charter of Rights and Freedoms. Apart from the Constitution Acts, 1867 to 1982, Canada's constitution also has unwritten elements based in common law and convention. + +Principles of constitutional design +After tribal people first began to live in cities and establish nations, many of these functioned according to unwritten customs, while some developed autocratic, even tyrannical monarchs, who ruled by decree, or mere personal whim. Such rule led some thinkers to take the position that what mattered was not the design of governmental institutions and operations, as much as the character of the rulers. This view can be seen in Plato, who called for rule by "philosopher-kings". Later writers, such as Aristotle, Cicero and Plutarch, would examine designs for government from a legal and historical standpoint. + +The Renaissance brought a series of political philosophers who wrote implied criticisms of the practices of monarchs and sought to identify principles of constitutional design that would be likely to yield more effective and just governance from their viewpoints. This began with revival of the Roman law of nations concept and its application to the relations among nations, and they sought to establish customary "laws of war and peace" to ameliorate wars and make them less likely. This led to considerations of what authority monarchs or other officials have and don't have, from where that authority derives, and the remedies for the abuse of such authority. + +A seminal juncture in this line of discourse arose in England from the Civil War, the Cromwellian Protectorate, the writings of Thomas Hobbes, Samuel Rutherford, the Levellers, John Milton, and James Harrington, leading to the debate between Robert Filmer, arguing for the divine right of monarchs, on the one side, and on the other, Henry Neville, James Tyrrell, Algernon Sidney, and John Locke. What arose from the latter was a concept of government being erected on the foundations of first, a state of nature governed by natural laws, then a state of society, established by a social contract or compact, which bring underlying natural or social laws, before governments are formally established on them as foundations. + +Along the way several writers examined how the design of government was important, even if the government were headed by a monarch. They also classified various historical examples of governmental designs, typically into democracies, aristocracies, or monarchies, and considered how just and effective each tended to be and why, and how the advantages of each might be obtained by combining elements of each into a more complex design that balanced competing tendencies. Some, such as Montesquieu, also examined how the functions of government, such as legislative, executive, and judicial, might appropriately be separated into branches. The prevailing theme among these writers was that the design of constitutions is not completely arbitrary or a matter of taste. They generally held that there are underlying principles of design that constrain all constitutions for every polity or organization. Each built on the ideas of those before concerning what those principles might be. + +The later writings of Orestes Brownson would try to explain what constitutional designers were trying to do. According to Brownson there are, in a sense, three "constitutions" involved: The first the constitution of nature that includes all of what was called "natural law". The second is the constitution of society, an unwritten and commonly understood set of rules for the society formed by a social contract before it establishes a government, by which it establishes the third, a constitution of government. The second would include such elements as the making of decisions by public conventions called by public notice and conducted by established rules of procedure. Each constitution must be consistent with, and derive its authority from, the ones before it, as well as from a historical act of society formation or constitutional ratification. Brownson argued that a state is a society with effective dominion over a well-defined territory, that consent to a well-designed constitution of government arises from presence on that territory, and that it is possible for provisions of a written constitution of government to be "unconstitutional" if they are inconsistent with the constitutions of nature or society. Brownson argued that it is not ratification alone that makes a written constitution of government legitimate, but that it must also be competently designed and applied. + +Other writers have argued that such considerations apply not only to all national constitutions of government, but also to the constitutions of private organizations, that it is not an accident that the constitutions that tend to satisfy their members contain certain elements, as a minimum, or that their provisions tend to become very similar as they are amended after experience with their use. Provisions that give rise to certain kinds of questions are seen to need additional provisions for how to resolve those questions, and provisions that offer no course of action may best be omitted and left to policy decisions. Provisions that conflict with what Brownson and others can discern are the underlying "constitutions" of nature and society tend to be difficult or impossible to execute, or to lead to unresolvable disputes. + +Constitutional design has been treated as a kind of metagame in which play consists of finding the best design and provisions for a written constitution that will be the rules for the game of government, and that will be most likely to optimize a balance of the utilities of justice, liberty, and security. An example is the metagame Nomic. + +Political economy theory regards constitutions as coordination devices that help citizens to prevent rulers from abusing power. If the citizenry can coordinate a response to police government officials in the face of a constitutional fault, then the government have the incentives to honor the rights that the constitution guarantees. An alternative view considers that constitutions are not enforced by the citizens at-large, but rather by the administrative powers of the state. Because rulers cannot themselves implement their policies, they need to rely on a set of organizations (armies, courts, police agencies, tax collectors) to implement it. In this position, they can directly sanction the government by refusing to cooperate, disabling the authority of the rulers. Therefore, constitutions could be characterized by a self-enforcing equilibria between the rulers and powerful administrators. + +Key features + +Most commonly, the term constitution refers to a set of rules and principles that define the nature and extent of government. Most constitutions seek to regulate the relationship between institutions of the state, in a basic sense the relationship between the executive, legislature and the judiciary, but also the relationship of institutions within those branches. For example, executive branches can be divided into a head of government, government departments/ministries, executive agencies and a civil service/administration. Most constitutions also attempt to define the relationship between individuals and the state, and to establish the broad rights of individual citizens. It is thus the most basic law of a territory from which all the other laws and rules are hierarchically derived; in some territories it is in fact called "Basic Law". + +Classification + +Classification + +Codification +A fundamental classification is codification or lack of codification. A codified constitution is one that is contained in a single document, which is the single source of constitutional law in a state. An uncodified constitution is one that is not contained in a single document, consisting of several different sources, which may be written or unwritten; see constitutional convention. + +Codified constitution +Most states in the world have codified constitutions. + +Codified constitutions are often the product of some dramatic political change, such as a revolution. The process by which a country adopts a constitution is closely tied to the historical and political context driving this fundamental change. The legitimacy (and often the longevity) of codified constitutions has often been tied to the process by which they are initially adopted and some scholars have pointed out that high constitutional turnover within a given country may itself be detrimental to separation of powers and the rule of law. + +States that have codified constitutions normally give the constitution supremacy over ordinary statute law. That is, if there is any conflict between a legal statute and the codified constitution, all or part of the statute can be declared ultra vires by a court, and struck down as unconstitutional. In addition, exceptional procedures are often required to amend a constitution. These procedures may include: convocation of a special constituent assembly or constitutional convention, requiring a supermajority of legislators' votes, approval in two terms of parliament, the consent of regional legislatures, a referendum process, and/or other procedures that make amending a constitution more difficult than passing a simple law. + +Constitutions may also provide that their most basic principles can never be abolished, even by amendment. In case a formally valid amendment of a constitution infringes these principles protected against any amendment, it may constitute a so-called unconstitutional constitutional law. + +Codified constitutions normally consist of a ceremonial preamble, which sets forth the goals of the state and the motivation for the constitution, and several articles containing the substantive provisions. The preamble, which is omitted in some constitutions, may contain a reference to God and/or to fundamental values of the state such as liberty, democracy or human rights. In ethnic nation-states such as Estonia, the mission of the state can be defined as preserving a specific nation, language and culture. + +Uncodified constitution + + only two sovereign states, New Zealand and the United Kingdom, have wholly uncodified constitutions. The Basic Laws of Israel have since 1950 been intended to be the basis for a constitution, but as of 2017 it had not been drafted. The various Laws are considered to have precedence over other laws, and give the procedure by which they can be amended, typically by a simple majority of members of the Knesset (parliament). + +Uncodified constitutions are the product of an "evolution" of laws and conventions over centuries (such as in the Westminster System that developed in Britain). By contrast to codified constitutions, uncodified constitutions include both written sources – e.g. constitutional statutes enacted by the Parliament – and unwritten sources – constitutional conventions, observation of precedents, royal prerogatives, customs and traditions, such as holding general elections on Thursdays; together these constitute British constitutional law. + +Mixed constitutions +Some constitutions are largely, but not wholly, codified. For example, in the Constitution of Australia, most of its fundamental political principles and regulations concerning the relationship between branches of government, and concerning the government and the individual are codified in a single document, the Constitution of the Commonwealth of Australia. However, the presence of statutes with constitutional significance, namely the Statute of Westminster, as adopted by the Commonwealth in the Statute of Westminster Adoption Act 1942, and the Australia Act 1986 means that Australia's constitution is not contained in a single constitutional document. It means the Constitution of Australia is uncodified, it also contains constitutional conventions, thus is partially unwritten. + +The Constitution of Canada resulted from the passage of several British North America Acts from 1867 to the Canada Act 1982, the act that formally severed British Parliament's ability to amend the Canadian constitution. The Canadian constitution includes specific legislative acts as mentioned in section 52(2) of the Constitution Act, 1982. However, some documents not explicitly listed in section 52(2) are also considered constitutional documents in Canada, entrenched via reference; such as the Proclamation of 1763. Although Canada's constitution includes a number of different statutes, amendments, and references, some constitutional rules that exist in Canada is derived from unwritten sources and constitutional conventions. + +The terms written constitution and codified constitution are often used interchangeably, as are unwritten constitution and uncodified constitution, although this usage is technically inaccurate. A codified constitution is a single document; states that do not have such a document have uncodified, but not entirely unwritten, constitutions, since much of an uncodified constitution is usually written in laws such as the Basic Laws of Israel and the Parliament Acts of the United Kingdom. Uncodified constitutions largely lack protection against amendment by the government of the time. For example, the U.K. Fixed-term Parliaments Act 2011 legislated by simple majority for strictly fixed-term parliaments; until then the ruling party could call a general election at any convenient time up to the maximum term of five years. This change would require a constitutional amendment in most nations. + +Amendments + +A constitutional amendment is a modification of the constitution of a polity, organization or other type of entity. Amendments are often interwoven into the relevant sections of an existing constitution, directly altering the text. Conversely, they can be appended to the constitution as supplemental additions (codicils), thus changing the frame of government without altering the existing text of the document. + +Most constitutions require that amendments cannot be enacted unless they have passed a special procedure that is more stringent than that required of ordinary legislation. + +Methods of amending + +Some countries are listed under more than one method because alternative procedures may be used. + +Entrenched clauses +An entrenched clause or entrenchment clause of a basic law or constitution is a provision that makes certain amendments either more difficult or impossible to pass, making such amendments inadmissible. Overriding an entrenched clause may require a supermajority, a referendum, or the consent of the minority party. For example, the U.S. Constitution has an entrenched clause that prohibits abolishing equal suffrage of the States within the Senate without their consent. The term eternity clause is used in a similar manner in the constitutions of the Czech Republic, Germany, Turkey, Greece, Italy, Morocco, the Islamic Republic of Iran, Brazil and Norway. India's constitution does not contain specific provisions on entrenched clauses but the basic structure doctrine makes it impossible for certain basic features of the Constitution to be altered or destroyed by the Parliament of India through an amendment. The Constitution of Colombia also lacks explicit entrenched clauses, but has a similar substantive limit on amending its fundamental principles through judicial interpretations. + +Constitutional rights and duties + +Constitutions include various rights and duties. These include the following: + Duty to pay taxes + Duty to serve in the military + Duty to work + Right to vote + Freedom of assembly + Freedom of association + Freedom of expression + Freedom of movement + Freedom of thought + Freedom of the press + Freedom of religion + Right to dignity + Right to civil marriage + Right to petition + Right to academic freedom + Right to bear arms + Right to conscientious objection + Right to a fair trial + Right to personal development + Right to start a family + Right to information + Right to marriage + Right of revolution + Right to privacy + Right to protect one's reputation + Right to renounce citizenship + Rights of children + Rights of debtors + +Separation of powers + +Constitutions usually explicitly divide power between various branches of government. The standard model, described by the Baron de Montesquieu, involves three branches of government: executive, legislative and judicial. Some constitutions include additional branches, such as an auditory branch. Constitutions vary extensively as to the degree of separation of powers between these branches. + +Accountability +In presidential and semi-presidential systems of government, department secretaries/ministers are accountable to the president, who has patronage powers to appoint and dismiss ministers. The president is accountable to the people in an election. + +In parliamentary systems, Cabinet Ministers are accountable to Parliament, but it is the prime minister who appoints and dismisses them. In the case of the United Kingdom and other countries with a monarchy, it is the monarch who appoints and dismisses ministers, on the advice of the prime minister. In turn the prime minister will resign if the government loses the confidence of the parliament (or a part of it). Confidence can be lost if the government loses a vote of no confidence or, depending on the country, loses a particularly important vote in parliament, such as vote on the budget. When a government loses confidence, it stays in office until a new government is formed; something which normally but not necessarily required the holding of a general election. + +Other independent institutions +Other independent institutions which some constitutions have set out include a central bank, an anti-corruption commission, an electoral commission, a judicial oversight body, a human rights commission, a media commission, an ombudsman, and a truth and reconciliation commission. + +Power structure + +Constitutions also establish where sovereignty is located in the state. There are three basic types of distribution of sovereignty according to the degree of centralisation of power: unitary, federal, and confederal. The distinction is not absolute. + +In a unitary state, sovereignty resides in the state itself, and the constitution determines this. The territory of the state may be divided into regions, but they are not sovereign and are subordinate to the state. In the UK, the constitutional doctrine of Parliamentary sovereignty dictates that sovereignty is ultimately contained at the centre. Some powers have been devolved to Northern Ireland, Scotland, and Wales (but not England). Some unitary states (Spain is an example) devolve more and more power to sub-national governments until the state functions in practice much like a federal state. + +A federal state has a central structure with at most a small amount of territory mainly containing the institutions of the federal government, and several regions (called states, provinces, etc.) which compose the territory of the whole state. Sovereignty is divided between the centre and the constituent regions. The constitutions of Canada and the United States establish federal states, with power divided between the federal government and the provinces or states. Each of the regions may in turn have its own constitution (of unitary nature). + +A confederal state comprises again several regions, but the central structure has only limited coordinating power, and sovereignty is located in the regions. Confederal constitutions are rare, and there is often dispute to whether so-called "confederal" states are actually federal. + +To some extent a group of states which do not constitute a federation as such may by treaties and accords give up parts of their sovereignty to a supranational entity. For example, the countries constituting the European Union have agreed to abide by some Union-wide measures which restrict their absolute sovereignty in some ways, e.g., the use of the metric system of measurement instead of national units previously used. + +State of emergency + +Many constitutions allow the declaration under exceptional circumstances of some form of state of emergency during which some rights and guarantees are suspended. This provision can be and has been abused to allow a government to suppress dissent without regard for human rights – see the article on state of emergency. + +Facade constitutions + +Italian political theorist Giovanni Sartori noted the existence of national constitutions which are a facade for authoritarian sources of power. While such documents may express respect for human rights or establish an independent judiciary, they may be ignored when the government feels threatened, or never put into practice. An extreme example was the Constitution of the Soviet Union that on paper supported freedom of assembly and freedom of speech; however, citizens who transgressed unwritten limits were summarily imprisoned. The example demonstrates that the protections and benefits of a constitution are ultimately provided not through its written terms but through deference by government and society to its principles. A constitution may change from being real to a facade and back again as democratic and autocratic governments succeed each other. + +Constitutional courts + +Constitutions are often, but by no means always, protected by a legal body whose job it is to interpret those constitutions and, where applicable, declare void executive and legislative acts which infringe the constitution. In some countries, such as Germany, this function is carried out by a dedicated constitutional court which performs this (and only this) function. In other countries, such as Ireland, the ordinary courts may perform this function in addition to their other responsibilities. While elsewhere, like in the United Kingdom, the concept of declaring an act to be unconstitutional does not exist. + +A constitutional violation is an action or legislative act that is judged by a constitutional court to be contrary to the constitution, that is, unconstitutional. An example of constitutional violation by the executive could be a public office holder who acts outside the powers granted to that office by a constitution. An example of constitutional violation by the legislature is an attempt to pass a law that would contradict the constitution, without first going through the proper constitutional amendment process. + +Some countries, mainly those with uncodified constitutions, have no such courts at all. For example, the United Kingdom has traditionally operated under the principle of parliamentary sovereignty under which the laws passed by United Kingdom Parliament could not be questioned by the courts. + +See also + Basic law, equivalent in some countries, often for a temporary constitution + Apostolic constitution (a class of Catholic Church documents) + Consent of the governed + Constitution of the Roman Republic + Constitutional amendment + Constitutional court + Constitutional crisis + Constitutional economics + Constitutionalism + Corporate constitutional documents + International constitutional law + Judicial activism + Judicial restraint + Judicial review + Philosophy of law + Rule of law + Rule according to higher law + +Judicial philosophies of constitutional interpretation (note: generally specific to United States constitutional law) + List of national constitutions + Originalism + Strict constructionism + Textualism + Proposed European Union constitution + Treaty of Lisbon (adopts same changes, but without constitutional name) + United Nations Charter + +Further reading + Zachary Elkins and Tom Ginsburg. 2021. "What Can We Learn from Written Constitutions?" Annual Review of Political Science. + +References + +External links + + Constitute, an indexed and searchable database of all constitutions in force +Amendments Project + Dictionary of the History of Ideas Constitutionalism + Constitutional Law, "Constitutions, bibliography, links" + International Constitutional Law: English translations of various national constitutions + United Nations Rule of Law: Constitution-making, on the relationship between constitution-making, the rule of law and the United Nations. + + constitution | Theories, Features, Practices, & Facts | Britannica + Constitutionalism | Stanford Encyclopedia of Philosophy + Constitutions and Constitutionalism | Encyclopedia.com + + +Sources of law +In law, common law (also known as judicial precedent, judge-made law, or case law) is the body of law created by judges and similar quasi-judicial tribunals by virtue of being stated in written opinions. + +The defining characteristic of common law is that it arises as precedent. Common law courts look to the past decisions of courts to synthesize the legal principles of past cases. Stare decisis, the principle that cases should be decided according to consistent principled rules so that similar facts will yield similar results, lies at the heart of all common law systems. If a court finds that a similar dispute to the present one has been resolved in the past, the court is generally bound to follow the reasoning used in the prior decision. If, however, the court finds that the current dispute is fundamentally distinct from all previous cases (a "matter of first impression"), and legislative statutes are either silent or ambiguous on the question, judges have the authority and duty to resolve the issue. The opinion that a common law judge gives agglomerates with past decisions as precedent to bind future judges and litigants. + +The common law, so named because it was "common" to all the king's courts across England, originated in the practices of the courts of the English kings in the centuries following the Norman Conquest in 1066. The British Empire later spread the English legal system to its colonies, many of which retain the common law system today. These common law systems are legal systems that give great weight to judicial precedent, and to the style of reasoning inherited from the English legal system. + +The term "common law", referring to the body of law made by the judiciary, is often distinguished from statutory law and regulations, which are laws adopted by the legislature and executive respectively. In legal systems that follow the common law, judicial precedent stands in contrast to and on equal footing with statutes. The other major legal system used by countries is the civil law, which codifies its legal principles into legal codes and does not treat judicial opinions as binding. + +Today, one-third of the world's population lives in common law jurisdictions or in mixed legal systems that combine the common law with the civil law, including Antigua and Barbuda, Australia, Bahamas, Bangladesh, Barbados, Belize, Botswana, Burma, Cameroon, Canada (both the federal system and all its provinces except Quebec), Cyprus, Dominica, Fiji, Ghana, Grenada, Guyana, Hong Kong, India, Ireland, Israel, Jamaica, Kenya, Liberia, Malaysia, Malta, Marshall Islands, Micronesia, Namibia, Nauru, New Zealand, Nigeria, Pakistan, Palau, Papua New Guinea, Philippines, Sierra Leone, Singapore, South Africa, Sri Lanka, Trinidad and Tobago, the United Kingdom (including its overseas territories such as Gibraltar), the United States (both the federal system and 49 of its 50 states), and Zimbabwe. + +Definitions +The term common law has many connotations. The first three set out here are the most-common usages within the legal community. Other connotations from past centuries are sometimes seen and are sometimes heard in everyday speech. + +Common law as opposed to statutory law and regulatory law +The first definition of "common law" given in Black's Law Dictionary, 10th edition, 2014, is "The body of law derived from judicial decisions, rather than from statutes or constitutions; [synonym] CASELAW, [contrast] STATUTORY LAW". This usage is given as the first definition in modern legal dictionaries, is characterized as the "most common" usage among legal professionals, and is the usage frequently seen in decisions of courts. In this connotation, "common law" distinguishes the authority that promulgated a law. For example, the law in most Anglo-American jurisdictions includes "statutory law" enacted by a legislature, "regulatory law" (in the U.S.) or "delegated legislation" (in the U.K.) promulgated by executive branch agencies pursuant to delegation of rule-making authority from the legislature, and common law or "case law", i.e., decisions issued by courts (or quasi-judicial tribunals within agencies). This first connotation can be further differentiated into: + +Publication of decisions, and indexing, is essential to the development of common law, and thus governments and private publishers publish law reports. While all decisions in common law jurisdictions are precedent (at varying levels and scope, as discussed throughout the article on precedent), some become "leading cases" or "landmark decisions" that are cited especially often. + +Common law legal systems as opposed to civil law legal systems +Black's Law Dictionary, 10th ed., definition 2, differentiates "common law" jurisdictions and legal systems from "civil law" or "code" jurisdictions. Common law systems place great weight on court decisions, which are considered "law" with the same force of law as statutes—for nearly a millennium, common law courts have had the authority to make law where no legislative statute exists, and statutes mean what courts interpret them to mean. + +By contrast, in civil law jurisdictions (the legal tradition that prevails, or is combined with common law, in Europe and most non-Islamic, non-common law countries), courts lack authority to act if there is no statute. Civil law judges tend to give less weight to judicial precedent, which means a civil law judge deciding a given case has more freedom to interpret the text of a statute independently (compared to a common law judge in the same circumstances), and therefore less predictably. For example, the Napoleonic Code expressly forbade French judges to pronounce general principles of law. The role of providing overarching principles, which in common law jurisdictions is provided in judicial opinions, in civil law jurisdictions is filled by giving greater weight to scholarly literature, as explained below. + +Common law systems trace their history to England, while civil law systems trace their history through the Napoleonic Code back to the of Roman law. A few Western countries use other legal traditions, such as Roman-Dutch law or Scots law, for example. + +Law as opposed to equity +Black's Law Dictionary, 10th ed., definition 4, differentiates "common law" (or just "law") from "equity". Before 1873, England had two complementary court systems: courts of "law" which could only award money damages and recognized only the legal owner of property, and courts of "equity" (courts of chancery) that could issue injunctive relief (that is, a court order to a party to do something, give something to someone, or stop doing something) and recognized trusts of property. This split propagated to many of the colonies, including the United States. The states of Delaware, Mississippi, South Carolina, and Tennessee continue to have divided Courts of Law and Courts of Chancery. In New Jersey, the appellate courts are unified, but the trial courts are organized into a Chancery Division and a Law Division. + +For most purposes, the U.S. federal system and most states have merged the two courts. Additionally, even before the separate courts were merged, most courts were permitted to apply both law and equity, though under potentially different procedural law. Nonetheless, the historical distinction between "law" and "equity" remains important today when the case involves issues such as the following: + Categorizing and prioritizing rights to property—for example, the same article of property often has a "legal title" and an "equitable title", and these two groups of ownership rights may be held by different people. + In the United States, determining whether the Seventh Amendment's right to a jury trial applies (a determination of a fact necessary to resolution of a "common law" claim) as opposed to whether the issue will be decided by a judge (issues of what the law is, and all issues relating to equity). + The standard of review and degree of deference given by an appellate tribunal to the decision of the lower tribunal under review (issues of law are reviewed de novo, that is, "as if new" from scratch by the appellate tribunal, while most issues of equity are reviewed for "abuse of discretion", that is, with great deference to the tribunal below). + The remedies available and rules of procedure to be applied. + +Courts of equity rely on common law (in the sense of this first connotation) principles of binding precedent. + +Archaic meanings and historical uses + +In addition, there are several historical (but now archaic) uses of the term that, while no longer current, provide background context that assists in understanding the meaning of "common law" today. + +In one usage that is now archaic, but that gives insight into the history of the common law, "common law" referred to the pre-Christian system of law, imported by the pre-literate Saxons to England and upheld into their historical times until 1066, when the Norman conquest overthrew the last Saxon king—i.e., before (it was supposed) there was any consistent, written law to be applied. + +"Common law" as the term is used today in common law countries contrasts with . While historically the became a secure point of reference in continental European legal systems, in England it was not a point of reference at all. + +The English Court of Common Pleas dealt with lawsuits in which the monarch had no interest, i.e., between commoners. + +Black's Law Dictionary, 10th ed., definition 3 is "General law common to a country as a whole, as opposed to special law that has only local application." From at least the 11th century and continuing for several centuries, there were several different circuits in the royal court system, served by itinerant judges who would travel from town to town dispensing the king's justice in "assizes". The term "common law" was used to describe the law held in common between the circuits and the different stops in each circuit. The more widely a particular law was recognized, the more weight it held, whereas purely local customs were generally subordinate to law recognized in a plurality of jurisdictions. + +Misconceptions and imprecise nonlawyer usages + +As used by non-lawyers in popular culture, the term "common law" connotes law based on ancient and unwritten universal custom of the people. The "ancient unwritten universal custom" view was the foundation of the first treatises by Blackstone and Coke, and was universal among lawyers and judges from the earliest times to the mid-19th century. However, for 100 years, lawyers and judges have recognized that the "ancient unwritten universal custom" view does not accord with the facts of the origin and growth of the law, and it is not held within the legal profession today. + +Under the modern view, "common law" is not grounded in "custom" or "ancient usage", but rather acquires force of law instantly (without the delay implied by the term "custom" or "ancient") when pronounced by a higher court, because and to the extent the proposition is stated in judicial opinion. From the earliest times through the late 19th century, the dominant theory was that the common law was a pre-existent law or system of rules, a social standard of justice that existed in the habits, customs, and thoughts of the people. Under this older view, the legal profession considered it no part of a judge's duty to make new or change existing law, but only to expound and apply the old. By the early 20th century, largely at the urging of Oliver Wendell Holmes (as discussed throughout this article), this view had fallen into the minority view: Holmes pointed out that the older view worked undesirable and unjust results, and hampered a proper development of the law. In the century since Holmes, the dominant understanding has been that common law "decisions are themselves law, or rather the rules which the courts lay down in making the decisions constitute law". Holmes wrote in a 1917 opinion, "The common law is not a brooding omnipresence in the sky, but the articulate voice of some sovereign or quasi-sovereign that can be identified." Among legal professionals (lawyers and judges), the change in understanding occurred in the late 19th and early 20th centuries (as explained later in this article), though lay (non-legal) dictionaries were decades behind in recognizing the change. + +The reality of the modern view, and implausibility of the old "ancient unwritten universal custom" view, can be seen in practical operation: under the pre-1870 view, (a) the "common law" should have been absolutely static over centuries (but it evolved), (b) jurisdictions could not logically diverge from each other (but nonetheless did and do today), (c) a new decision logically needed to operate retroactively (but did not), and (d) there was no standard to decide which English medieval customs should be "law" and which should not. All five tensions resolve under the modern view: (a) the common law evolved to meet the needs of the times (e.g., trial by combat passed out of the law by the 15th century), (b) the common law in different jurisdictions may diverge, (c) new decisions may (but need not) have retroactive operation, and (d) court decisions are effective immediately as they are issued, not years later, or after they become "custom", and questions of what "custom" might have been at some "ancient" time are simply irrelevant. + + Common law, as the term is used among lawyers in the present day, is not grounded in "custom" or "ancient usage". Common law acquires force of law because it is pronounced by a court (or similar tribunal) in an opinion, not by action or opinion of "the people" or "custom." + Common law is not frozen in time, and no longer beholden to 11th-, 13th-, or 17th-century English law. Rather, the common law evolves daily and immediately as courts issue precedential decisions (as explained later in this article), and all parties in the legal system (courts, lawyers, and all others) are responsible for up-to-date knowledge. There is no fixed reference point (for example the 11th or 18th centuries) for the definition of "common law", except in a handful of isolated contexts. Much of what was "customary" in the 13th or 17th or 18th century has no part of the common law today; much of the common law today has no antecedent in those earlier centuries. + The common law is not "unwritten". Common law exists in writing—as must any law that is to be applied consistently—in the written decisions of judges. + Common law is not the product of "universal consent". Rather, the common law is often anti-majoritarian. + +People using pseudolegal tactics and arguments have frequently claimed to base their arguments on common law; notably, the radical anti-government sovereign citizens and freemen on the land movements, who deny the legitimacy of their countries' legal systems, base their beliefs on idiosyncratic interpretations of common law. "Common law" has also been used as an alibi by groups such as the far-right American Patriot movement for setting up kangaroo courts in order to conduct vigilante actions or intimidate their opponents. + +Basic principles of common law + +Common law adjudication + +In a common law jurisdiction several stages of research and analysis are required to determine "what the law is" in a given situation. First, one must ascertain the facts. Then, one must locate any relevant statutes and cases. Then one must extract the principles, analogies and statements by various courts of what they consider important to determine how the next court is likely to rule on the facts of the present case. Later decisions, and decisions of higher courts or legislatures carry more weight than earlier cases and those of lower courts. Finally, one integrates all the lines drawn and reasons given, and determines "what the law is". Then, one applies that law to the facts. + +In practice, common law systems are considerably more complicated than the simplified system described above. The decisions of a court are binding only in a particular jurisdiction, and even within a given jurisdiction, some courts have more power than others. For example, in most jurisdictions, decisions by appellate courts are binding on lower courts in the same jurisdiction, and on future decisions of the same appellate court, but decisions of lower courts are only non-binding persuasive authority. Interactions between common law, constitutional law, statutory law and regulatory law also give rise to considerable complexity. + +Common law evolves to meet changing social needs and improved understanding +Oliver Wendell Holmes Jr. cautioned that "the proper derivation of general principles in both common and constitutional law ... arise gradually, in the emergence of a consensus from a multitude of particularized prior decisions". Justice Cardozo noted the "common law does not work from pre-established truths of universal and inflexible validity to conclusions derived from them deductively", but "[i]ts method is inductive, and it draws its generalizations from particulars". + +The common law is more malleable than statutory law. First, common law courts are not absolutely bound by precedent, but can (when extraordinarily good reason is shown) reinterpret and revise the law, without legislative intervention, to adapt to new trends in political, legal and social philosophy. Second, the common law evolves through a series of gradual steps, that gradually works out all the details, so that over a decade or more, the law can change substantially but without a sharp break, thereby reducing disruptive effects. In contrast to common law incrementalism, the legislative process is very difficult to get started, as legislatures tend to delay action until a situation is intolerable. For these reasons, legislative changes tend to be large, jarring and disruptive (sometimes positively, sometimes negatively, and sometimes with unintended consequences). + +One example of the gradual change that typifies evolution of the common law is the gradual change in liability for negligence. The traditional common law rule through most of the 19th century was that a plaintiff could not recover for a defendant's negligent production or distribution of a harmful instrumentality unless the two were in privity of contract. Thus, only the immediate purchaser could recover for a product defect, and if a part was built up out of parts from parts manufacturers, the ultimate buyer could not recover for injury caused by a defect in the part. In an 1842 English case, Winterbottom v. Wright, the postal service had contracted with Wright to maintain its coaches. Winterbottom was a driver for the post. When the coach failed and injured Winterbottom, he sued Wright. The Winterbottom court recognized that there would be "absurd and outrageous consequences" if an injured person could sue any person peripherally involved, and knew it had to draw a line somewhere, a limit on the causal connection between the negligent conduct and the injury. The court looked to the contractual relationships, and held that liability would only flow as far as the person in immediate contract ("privity") with the negligent party. + +A first exception to this rule arose in 1852, in the case of Thomas v. Winchester, when New York's highest court held that mislabeling a poison as an innocuous herb, and then selling the mislabeled poison through a dealer who would be expected to resell it, put "human life in imminent danger". Thomas relied on this reason to create an exception to the "privity" rule. In 1909, New York held in Statler v. Ray Mfg. Co. that a coffee urn manufacturer was liable to a person injured when the urn exploded, because the urn "was of such a character inherently that, when applied to the purposes for which it was designed, it was liable to become a source of great danger to many people if not carefully and properly constructed". + +Yet the privity rule survived. In Cadillac Motor Car Co. v. Johnson (decided in 1915 by the federal appeals court for New York and several neighboring states), the court held that a car owner could not recover for injuries from a defective wheel, when the automobile owner had a contract only with the automobile dealer and not with the manufacturer, even though there was "no question that the wheel was made of dead and 'dozy' wood, quite insufficient for its purposes". The Cadillac court was willing to acknowledge that the case law supported exceptions for "an article dangerous in its nature or likely to become so in the course of the ordinary usage to be contemplated by the vendor". However, held the Cadillac court, "one who manufactures articles dangerous only if defectively made, or installed, e.g., tables, chairs, pictures or mirrors hung on the walls, carriages, automobiles, and so on, is not liable to third parties for injuries caused by them, except in case of willful injury or fraud". + +Finally, in the famous case of MacPherson v. Buick Motor Co., in 1916, Judge Benjamin Cardozo for New York's highest court pulled a broader principle out of these predecessor cases. The facts were almost identical to Cadillac a year earlier: a wheel from a wheel manufacturer was sold to Buick, to a dealer, to MacPherson, and the wheel failed, injuring MacPherson. Judge Cardozo held: + +Cardozo's new "rule" exists in no prior case, but is inferrable as a synthesis of the "thing of danger" principle stated in them, merely extending it to "foreseeable danger" even if "the purposes for which it was designed" were not themselves "a source of great danger". MacPherson takes some care to present itself as foreseeable progression, not a wild departure. Cardozo continues to adhere to the original principle of Winterbottom, that "absurd and outrageous consequences" must be avoided, and he does so by drawing a new line in the last sentence quoted above: "There must be knowledge of a danger, not merely possible, but probable." But while adhering to the underlying principle that some boundary is necessary, MacPherson overruled the prior common law by rendering the formerly dominant factor in the boundary, that is, the privity formality arising out of a contractual relationship between persons, totally irrelevant. Rather, the most important factor in the boundary would be the nature of the thing sold and the foreseeable uses that downstream purchasers would make of the thing. + +The example of the evolution of the law of negligence in the preceding paragraphs illustrates two crucial principles: (a) The common law evolves, this evolution is in the hands of judges, and judges have "made law" for hundreds of years. (b) The reasons given for a decision are often more important in the long run than the outcome in a particular case. This is the reason that judicial opinions are usually quite long, and give rationales and policies that can be balanced with judgment in future cases, rather than the bright-line rules usually embodied in statutes. + +Publication of decisions + +All law systems rely on written publication of the law, so that it is accessible to all. Common law decisions are published in law reports for use by lawyers, courts and the general public. + +After the American Revolution, Massachusetts became the first state to establish an official Reporter of Decisions. As newer states needed law, they often looked first to the Massachusetts Reports for authoritative precedents as a basis for their own common law. The United States federal courts relied on private publishers until after the Civil War, and only began publishing as a government function in 1874. West Publishing in Minnesota is the largest private-sector publisher of law reports in the United States. Government publishers typically issue only decisions "in the raw", while private sector publishers often add indexing, including references to the key principles of the common law involved, editorial analysis, and similar finding aids. + +Interaction of constitution, statute, and executive branch regulation with common law + +In common law legal systems, the common law is crucial to understanding almost all important areas of law. For example, in England and Wales, in English Canada, and in most states of the United States, the basic law of contracts, torts and property do not exist in statute, but only in common law (though there may be isolated modifications enacted by statute). As another example, the Supreme Court of the United States in 1877, held that a Michigan statute that established rules for solemnization of marriages did not abolish pre-existing common-law marriage, because the statute did not affirmatively require statutory solemnization and was silent as to preexisting common law. + +In almost all areas of the law (even those where there is a statutory framework, such as contracts for the sale of goods, or the criminal law), legislature-enacted statutes or agency-promulgated regulations generally give only terse statements of general principle, and the fine boundaries and definitions exist only in the interstitial common law. To find out what the precise law is that applies to a particular set of facts, one has to locate precedential decisions on the topic, and reason from those decisions by analogy. + +In common law jurisdictions (in the sense opposed to "civil law"), legislatures operate under the assumption that statutes will be interpreted against the backdrop of the pre-existing common law. As the United States Supreme Court explained in United States v Texas, 507 U.S. 529 (1993): + +{{|Just as longstanding is the principle that "[s]tatutes which invade the common law ... are to be read with a presumption favoring the retention of long-established and familiar principles, except when a statutory purpose to the contrary is evident. Isbrandtsen Co. v. Johnson, 343 U.S. 779, 783 (1952); Astoria Federal Savings & Loan Assn. v. Solimino, 501 U.S. 104, 108 (1991). In such cases, Congress does not write upon a clean slate. Astoria, 501 U.S. at 108. In order to abrogate a common-law principle, the statute must "speak directly" to the question addressed by the common law. Mobil Oil Corp. v. Higginbotham, 436 U. S. 618, 625 (1978); Milwaukee v. Illinois, 451 U. S. 304, 315 (1981).}} + +For example, in most U.S. states, the criminal statutes are primarily codification of pre-existing common law. (Codification is the process of enacting a statute that collects and restates pre-existing law in a single document—when that pre-existing law is common law, the common law remains relevant to the interpretation of these statutes.) In reliance on this assumption, modern statutes often leave a number of terms and fine distinctions unstated—for example, a statute might be very brief, leaving the precise definition of terms unstated, under the assumption that these fine distinctions would be resolved in the future by the courts based upon what they then understand to be the pre-existing common law. (For this reason, many modern American law schools teach the common law of crime as it stood in England in 1789, because that centuries-old English common law is a necessary foundation to interpreting modern criminal statutes.) + +With the transition from English law, which had common law crimes, to the new legal system under the U.S. Constitution, which prohibited ex post facto laws at both the federal and state level, the question was raised whether there could be common law crimes in the United States. It was settled in the case of United States v. Hudson, which decided that federal courts had no jurisdiction to define new common law crimes, and that there must always be a (constitutionally valid) statute defining the offense and the penalty for it. + +Still, many states retain selected common law crimes. For example, in Virginia, the definition of the conduct that constitutes the crime of robbery exists only in the common law, and the robbery statute only sets the punishment. Virginia Code section 1-200 establishes the continued existence and vitality of common law principles and provides that "The common law of England, insofar as it is not repugnant to the principles of the Bill of Rights and Constitution of this Commonwealth, shall continue in full force within the same, and be the rule of decision, except as altered by the General Assembly." + +By contrast to statutory codification of common law, some statutes displace common law, for example to create a new cause of action that did not exist in the common law, or to legislatively overrule the common law. An example is the tort of wrongful death, which allows certain persons, usually a spouse, child or estate, to sue for damages on behalf of the deceased. There is no such tort in English common law; thus, any jurisdiction that lacks a wrongful death statute will not allow a lawsuit for the wrongful death of a loved one. Where a wrongful death statute exists, the compensation or other remedy available is limited to the remedy specified in the statute (typically, an upper limit on the amount of damages). Courts generally interpret statutes that create new causes of action narrowly—that is, limited to their precise terms—because the courts generally recognize the legislature as being supreme in deciding the reach of judge-made law unless such statute should violate some "second order" constitutional law provision (cf. judicial activism). This principle is applied more strongly in fields of commercial law (contracts and the like) where predictability is of relatively higher value, and less in torts, where courts recognize a greater responsibility to "do justice". + +Where a tort is rooted in common law, all traditionally recognized damages for that tort may be sued for, whether or not there is mention of those damages in the current statutory law. For instance, a person who sustains bodily injury through the negligence of another may sue for medical costs, pain, suffering, loss of earnings or earning capacity, mental and/or emotional distress, loss of quality of life, disfigurement and more. These damages need not be set forth in statute as they already exist in the tradition of common law. However, without a wrongful death statute, most of them are extinguished upon death. + +In the United States, the power of the federal judiciary to review and invalidate unconstitutional acts of the federal executive branch is stated in the constitution, Article III sections 1 and 2: "The judicial Power of the United States, shall be vested in one supreme Court, and in such inferior Courts as the Congress may from time to time ordain and establish. ... The judicial Power shall extend to all Cases, in Law and Equity, arising under this Constitution, the Laws of the United States, and Treaties made, or which shall be made, under their Authority". The first landmark decision on "the judicial power" was Marbury v. Madison, . Later cases interpreted the "judicial power" of Article III to establish the power of federal courts to consider or overturn any action of Congress or of any state that conflicts with the Constitution. + +The interactions between decisions of different courts is discussed further in the article on precedent. Further interactions between common law and either statute or regulation are discussed further in the articles on Skidmore deference, Chevron deference, and Auer deference. + +Overruling precedent—the limits of stare decisis +The United States federal courts are divided into twelve regional circuits, each with a circuit court of appeals (plus a thirteenth, the Court of Appeals for the Federal Circuit, which hears appeals in patent cases and cases against the federal government, without geographic limitation). Decisions of one circuit court are binding on the district courts within the circuit and on the circuit court itself, but are only persuasive authority on sister circuits. District court decisions are not binding precedent at all, only persuasive. + +Most of the U.S. federal courts of appeal have adopted a rule under which, in the event of any conflict in decisions of panels (most of the courts of appeal almost always sit in panels of three), the earlier panel decision is controlling, and a panel decision may only be overruled by the court of appeals sitting en banc (that is, all active judges of the court) or by a higher court. In these courts, the older decision remains controlling when an issue comes up the third time. + +Other courts, for example, the Court of Customs and Patent Appeals and the Supreme Court, always sit en banc, and thus the later decision controls. These courts essentially overrule all previous cases in each new case, and older cases survive only to the extent they do not conflict with newer cases. The interpretations of these courts—for example, Supreme Court interpretations of the constitution or federal statutes—are stable only so long as the older interpretation maintains the support of a majority of the court. Older decisions persist through some combination of belief that the old decision is right, and that it is not sufficiently wrong to be overruled. + +In the jurisdictions of England and Wales and of Northern Ireland, since 2009, the Supreme Court of the United Kingdom has the authority to overrule and unify criminal law decisions of lower courts; it is the final court of appeal for civil law cases in all three of the UK jurisdictions, but not for criminal law cases in Scotland, where the High Court of Justiciary has this power instead (except on questions of law relating to reserved matters such as devolution and human rights). From 1966 to 2009, this power lay with the House of Lords, granted by the Practice Statement of 1966. + +Canada's federal system, described below, avoids regional variability of federal law by giving national jurisdiction to both layers of appellate courts. + +Common law as a foundation for commercial economies + +The reliance on judicial opinion is a strength of common law systems, and is a significant contributor to the robust commercial systems in the United Kingdom and United States. Because there is reasonably precise guidance on almost every issue, parties (especially commercial parties) can predict whether a proposed course of action is likely to be lawful or unlawful, and have some assurance of consistency. As Justice Brandeis famously expressed it, "in most matters it is more important that the applicable rule of law be settled than that it be settled right." This ability to predict gives more freedom to come close to the boundaries of the law. For example, many commercial contracts are more economically efficient, and create greater wealth, because the parties know ahead of time that the proposed arrangement, though perhaps close to the line, is almost certainly legal. Newspapers, taxpayer-funded entities with some religious affiliation, and political parties can obtain fairly clear guidance on the boundaries within which their freedom of expression rights apply. + +In contrast, in jurisdictions with very weak respect for precedent, fine questions of law are redetermined anew each time they arise, making consistency and prediction more difficult, and procedures far more protracted than necessary because parties cannot rely on written statements of law as reliable guides. In jurisdictions that do not have a strong allegiance to a large body of precedent, parties have less a priori guidance (unless the written law is very clear and kept updated) and must often leave a bigger "safety margin" of unexploited opportunities, and final determinations are reached only after far larger expenditures on legal fees by the parties. + +This is the reason for the frequent choice of the law of the State of New York in commercial contracts, even when neither entity has extensive contacts with New York—and remarkably often even when neither party has contacts with the United States. Commercial contracts almost always include a "choice of law clause" to reduce uncertainty. Somewhat surprisingly, contracts throughout the world (for example, contracts involving parties in Japan, France and Germany, and from most of the other states of the United States) often choose the law of New York, even where the relationship of the parties and transaction to New York is quite attenuated. Because of its history as the United States' commercial center, New York common law has a depth and predictability not (yet) available in any other jurisdictions of the United States. Similarly, American corporations are often formed under Delaware corporate law, and American contracts relating to corporate law issues (merger and acquisitions of companies, rights of shareholders, and so on) include a Delaware choice of law clause, because of the deep body of law in Delaware on these issues. On the other hand, some other jurisdictions have sufficiently developed bodies of law so that parties have no real motivation to choose the law of a foreign jurisdiction (for example, England and Wales, and the state of California), but not yet so fully developed that parties with no relationship to the jurisdiction choose that law. Outside the United States, parties that are in different jurisdictions from each other often choose the law of England and Wales, particularly when the parties are each in former British colonies and members of the Commonwealth. The common theme in all cases is that commercial parties seek predictability and simplicity in their contractual relations, and frequently choose the law of a common law jurisdiction with a well-developed body of common law to achieve that result. + +Likewise, for litigation of commercial disputes arising out of unpredictable torts (as opposed to the prospective choice of law clauses in contracts discussed in the previous paragraph), certain jurisdictions attract an unusually high fraction of cases, because of the predictability afforded by the depth of decided cases. For example, London is considered the pre-eminent centre for litigation of admiralty cases. + +This is not to say that common law is better in every situation. For example, civil law can be clearer than case law when the legislature has had the foresight and diligence to address the precise set of facts applicable to a particular situation. For that reason, civil law statutes tend to be somewhat more detailed than statutes written by common law legislatures—but, conversely, that tends to make the statute more difficult to read (the United States tax code is an example). + +History + +Origins +The common lawso named because it was "common" to all the king's courts across Englandoriginated in the practices of the courts of the English kings in the centuries following the Norman Conquest in 1066. Prior to the Norman Conquest, much of England's legal business took place in the local folk courts of its various shires and hundreds. A variety of other individual courts also existed across the land: urban boroughs and merchant fairs held their own courts, and large landholders also held their own manorial and seigniorial courts as needed. The degree to which common law drew from earlier Anglo-Saxon traditions such as the jury, ordeals, the penalty of outlawry, and writs all of which were incorporated into the Norman common law is still a subject of much discussion. Additionally, the Catholic Church operated its own court system that adjudicated issues of canon law. + +The main sources for the history of the common law in the Middle Ages are the plea rolls and the Year Books. The plea rolls, which were the official court records for the Courts of Common Pleas and King's Bench, were written in Latin. The rolls were made up in bundles by law term: Hilary, Easter, Trinity, and Michaelmas, or winter, spring, summer, and autumn. They are currently deposited in the UK National Archives, by whose permission images of the rolls for the Courts of Common Pleas, King's Bench, and Exchequer of Pleas, from the 13th century to the 17th, can be viewed online at the Anglo-American Legal Tradition site (The O'Quinn Law Library of the University of Houston Law Center). + +The doctrine of precedent developed during the 12th and 13th centuries, as the collective judicial decisions that were based in tradition, custom and precedent. + +The form of reasoning used in common law is known as casuistry or case-based reasoning. The common law, as applied in civil cases (as distinct from criminal cases), was devised as a means of compensating someone for wrongful acts known as torts, including both intentional torts and torts caused by negligence, and as developing the body of law recognizing and regulating contracts. The type of procedure practiced in common law courts is known as the adversarial system; this is also a development of the common law. + +Medieval English common law + +In 1154, Henry II became the first Plantagenet king. Among many achievements, Henry institutionalized common law by creating a unified system of law "common" to the country through incorporating and elevating local custom to the national, ending local control and peculiarities, eliminating arbitrary remedies and reinstating a jury system—citizens sworn on oath to investigate reliable criminal accusations and civil claims. The jury reached its verdict through evaluating common local knowledge, not necessarily through the presentation of evidence, a distinguishing factor from today's civil and criminal court systems. + +At the time, royal government centered on the Curia Regis (king's court), the body of aristocrats and prelates who assisted in the administration of the realm and the ancestor of Parliament, the Star Chamber, and Privy Council. Henry II developed the practice of sending judges (numbering around 20 to 30 in the 1180s) from his Curia Regis to hear the various disputes throughout the country, and return to the court thereafter. The king's itinerant justices would generally receive a writ or commission under the great seal. They would then resolve disputes on an ad hoc basis according to what they interpreted the customs to be. The king's judges would then return to London and often discuss their cases and the decisions they made with the other judges. These decisions would be recorded and filed. In time, a rule, known as stare decisis (also commonly known as precedent) developed, whereby a judge would be bound to follow the decision of an earlier judge; he was required to adopt the earlier judge's interpretation of the law and apply the same principles promulgated by that earlier judge if the two cases had similar facts to one another. Once judges began to regard each other's decisions to be binding precedent, the pre-Norman system of local customs and law varying in each locality was replaced by a system that was (at least in theory, though not always in practice) common throughout the whole country, hence the name "common law". + +The king's object was to preserve public order, but providing law and order was also extremely profitable–cases on forest use as well as fines and forfeitures can generate "great treasure" for the government. Eyres (a Norman French word for judicial circuit, originating from Latin iter) are more than just courts; they would supervise local government, raise revenue, investigate crimes, and enforce feudal rights of the king. There were complaints of the eyre of 1198 reducing the kingdom to poverty and Cornishmen fleeing to escape the eyre of 1233. + +Henry II's creation of a powerful and unified court system, which curbed somewhat the power of canonical (church) courts, brought him (and England) into conflict with the church, most famously with Thomas Becket, the Archbishop of Canterbury. The murder of the Archbishop gave rise to a wave of popular outrage against the King. International pressure on Henry grew, and in May 1172 he negotiated a settlement with the papacy in which the King swore to go on crusade as well as effectively overturned the more controversial clauses of the Constitutions of Clarendon. Henry nevertheless continued to exert influence in any ecclesiastical case which interested him and royal power was exercised more subtly with considerable success. + +The English Court of Common Pleas was established after Magna Carta to try lawsuits between commoners in which the monarch had no interest. Its judges sat in open court in the Great Hall of the king's Palace of Westminster, permanently except in the vacations between the four terms of the Legal year. + +Judge-made common law operated as the primary source of law for several hundred years, before Parliament acquired legislative powers to create statutory law. It is important to understand that common law is the older and more traditional source of law, and legislative power is simply a layer applied on top of the older common law foundation. Since the 12th century, courts have had parallel and co-equal authority to make law—"legislating from the bench" is a traditional and essential function of courts, which was carried over into the U.S. system as an essential component of the "judicial power" specified by Article III of the U.S. Constitution. Justice Oliver Wendell Holmes Jr. summarized centuries of history in 1917, "judges do and must legislate." In the United States, state courts continue to exercise full common law powers, and create both general common law and interstitial common law. In U.S. federal courts, after Erie R. Co. v. Tompkins, 304 U.S. 64, 78 (1938), the general dividing line is that federal courts can only "interpret" to create interstitial common law not exercise general common law powers. However, that authority to "interpret" can be an expansive power to "make law," especially on Constitutional issues where the Constitutional text is so terse. There are legitimate debates on how the powers of courts and legislatures should be balanced around "interpretation." However, the view that courts lack law-making power is historically inaccurate and constitutionally unsupportable. + +In England, judges have devised a number of rules as to how to deal with precedent decisions. The early development of case-law in the thirteenth century has been traced to Bracton's On the Laws and Customs of England and led to the yearly compilations of court cases known as Year Books, of which the first extant was published in 1268, the same year that Bracton died. The Year Books are known as the law reports of medieval England, and are a principal source for knowledge of the developing legal doctrines, concepts, and methods in the period from the 13th to the 16th centuries, when the common law developed into recognizable form. + +Influence of Roman law +The term "common law" is often used as a contrast to Roman-derived "civil law", and the fundamental processes and forms of reasoning in the two are quite different. Nonetheless, there has been considerable cross-fertilization of ideas, while the two traditions and sets of foundational principles remain distinct. + +By the time of the rediscovery of the Roman law in Europe in the 12th and 13th centuries, the common law had already developed far enough to prevent a Roman law reception as it occurred on the continent. However, the first common law scholars, most notably Glanvill and Bracton, as well as the early royal common law judges, had been well accustomed with Roman law. Often, they were clerics trained in the Roman canon law. One of the first and throughout its history one of the most significant treatises of the common law, Bracton's De Legibus et Consuetudinibus Angliae (On the Laws and Customs of England), was heavily influenced by the division of the law in Justinian's Institutes. The impact of Roman law had decreased sharply after the age of Bracton, but the Roman divisions of actions into in rem (typically, actions against a thing or property for the purpose of gaining title to that property; must be filed in a court where the property is located) and in personam (typically, actions directed against a person; these can affect a person's rights and, since a person often owns things, his property too) used by Bracton had a lasting effect and laid the groundwork for a return of Roman law structural concepts in the 18th and 19th centuries. Signs of this can be found in Blackstone's Commentaries on the Laws of England, and Roman law ideas regained importance with the revival of academic law schools in the 19th century. As a result, today, the main systematic divisions of the law into property, contract, and tort (and to some extent unjust enrichment) can be found in the civil law as well as in the common law. + +Coke and Blackstone + +The first attempt at a comprehensive compilation of centuries of common law was by Lord Chief Justice Edward Coke, in his treatise, Institutes of the Lawes of England in the 17th century. + +The next definitive historical treatise on the common law is Commentaries on the Laws of England, written by Sir William Blackstone and first published in 1765–1769. + +Propagation of the common law to the colonies and Commonwealth by reception statutes + +A reception statute is a statutory law adopted as a former British colony becomes independent, by which the new nation adopts (i.e. receives) pre-independence common law, to the extent not explicitly rejected by the legislative body or constitution of the new nation. Reception statutes generally consider the English common law dating prior to independence, and the precedent originating from it, as the default law, because of the importance of using an extensive and predictable body of law to govern the conduct of citizens and businesses in a new state. All U.S. states, with the partial exception of Louisiana, have either implemented reception statutes or adopted the common law by judicial opinion. + +Other examples of reception statutes in the United States, the states of the U.S., Canada and its provinces, and Hong Kong, are discussed in the reception statute article. + +Yet, adoption of the common law in the newly independent nation was not a foregone conclusion, and was controversial. Immediately after the American Revolution, there was widespread distrust and hostility to anything British, and the common law was no exception. Jeffersonians decried lawyers and their common law tradition as threats to the new republic. The Jeffersonians preferred a legislatively enacted civil law under the control of the political process, rather than the common law developed by judges that—by design—were insulated from the political process. The Federalists believed that the common law was the birthright of Independence: after all, the natural rights to "life, liberty, and the pursuit of happiness" were the rights protected by common law. Even advocates for the common law approach noted that it was not an ideal fit for the newly independent colonies: judges and lawyers alike were severely hindered by a lack of printed legal materials. Before Independence, the most comprehensive law libraries had been maintained by Tory lawyers, and those libraries vanished with the loyalist expatriation, and the ability to print books was limited. Lawyer (later President) John Adams complained that he "suffered very much for the want of books". To bootstrap this most basic need of a common law system—knowable, written law—in 1803, lawyers in Massachusetts donated their books to found a law library. A Jeffersonian newspaper criticized the library, as it would carry forward "all the old authorities practiced in England for centuries back ... whereby a new system of jurisprudence [will be founded] on the high monarchical system [to] become the Common Law of this Commonwealth... [The library] may hereafter have a very unsocial purpose." + +For several decades after independence, English law still exerted influence over American common law—for example, with Byrne v Boadle (1863), which first applied the res ipsa loquitur doctrine. + +Decline of Latin maxims and "blind imitation of the past", and adding flexibility to stare decisis +Well into the 19th century, ancient maxims played a large role in common law adjudication. Many of these maxims had originated in Roman Law, migrated to England before the introduction of Christianity to the British Isles, and were typically stated in Latin even in English decisions. Many examples are familiar in everyday speech even today, "One cannot be a judge in one's own cause" (see Dr. Bonham's Case), rights are reciprocal to obligations, and the like. Judicial decisions and treatises of the 17th and 18th centuries, such at those of Lord Chief Justice Edward Coke, presented the common law as a collection of such maxims. + +Reliance on old maxims and rigid adherence to precedent, no matter how old or ill-considered, came under critical discussion in the late 19th century, starting in the United States. Oliver Wendell Holmes Jr. in his famous article, "The Path of the Law", commented, "It is revolting to have no better reason for a rule of law than that so it was laid down in the time of Henry IV. It is still more revolting if the grounds upon which it was laid down have vanished long since, and the rule simply persists from blind imitation of the past." Justice Holmes noted that study of maxims might be sufficient for "the man of the present", but "the man of the future is the man of statistics and the master of economics". In an 1880 lecture at Harvard, he wrote: + +In the early 20th century, Louis Brandeis, later appointed to the United States Supreme Court, became noted for his use of policy-driving facts and economics in his briefs, and extensive appendices presenting facts that lead a judge to the advocate's conclusion. By this time, briefs relied more on facts than on Latin maxims. + +Reliance on old maxims is now deprecated. Common law decisions today reflect both precedent and policy judgment drawn from economics, the social sciences, business, decisions of foreign courts, and the like. The degree to which these external factors should influence adjudication is the subject of active debate, but it is indisputable that judges do draw on experience and learning from everyday life, from other fields, and from other jurisdictions. + +1870 through 20th century, and the procedural merger of law and equity + +As early as the 15th century, it became the practice that litigants who felt they had been cheated by the common law system would petition the King in person. For example, they might argue that an award of damages (at common law (as opposed to equity)) was not sufficient redress for a trespasser occupying their land, and instead request that the trespasser be evicted. From this developed the system of equity, administered by the Lord Chancellor, in the courts of chancery. By their nature, equity and law were frequently in conflict and litigation would frequently continue for years as one court countermanded the other, even though it was established by the 17th century that equity should prevail. + +In England, courts of law (as opposed to equity) were merged with courts of equity by the Judicature Acts of 1873 and 1875, with equity prevailing in case of conflict. + +In the United States, parallel systems of law (providing money damages, with cases heard by a jury upon either party's request) and equity (fashioning a remedy to fit the situation, including injunctive relief, heard by a judge) survived well into the 20th century. The United States federal courts procedurally separated law and equity: the same judges could hear either kind of case, but a given case could only pursue causes in law or in equity, and the two kinds of cases proceeded under different procedural rules. This became problematic when a given case required both money damages and injunctive relief. In 1937, the new Federal Rules of Civil Procedure combined law and equity into one form of action, the "civil action". Fed.R.Civ.P. . The distinction survives to the extent that issues that were "common law (as opposed to equity)" as of 1791 (the date of adoption of the Seventh Amendment) are still subject to the right of either party to request a jury, and "equity" issues are decided by a judge. + +The states of Delaware, Illinois, Mississippi, South Carolina, and Tennessee continue to have divided courts of law and courts of chancery, for example, the Delaware Court of Chancery. In New Jersey, the appellate courts are unified, but the trial courts are organized into a Chancery Division and a Law Division. + +Common law pleading and its abolition in the early 20th century + +For centuries, through to the 19th century, the common law acknowledged only specific forms of action, and required very careful drafting of the opening pleading (called a writ) to slot into exactly one of them: debt, detinue, covenant, special assumpsit, general assumpsit, trespass, trover, replevin, case (or trespass on the case), and ejectment. To initiate a lawsuit, a pleading had to be drafted to meet myriad technical requirements: correctly categorizing the case into the correct legal pigeonhole (pleading in the alternative was not permitted), and using specific legal terms and phrases that had been traditional for centuries. Under the old common law pleading standards, a suit by a pro se ("for oneself", without a lawyer) party was all but impossible, and there was often considerable procedural jousting at the outset of a case over minor wording issues. + +One of the major reforms of the late 19th century and early 20th century was the abolition of common law pleading requirements. A plaintiff can initiate a case by giving the defendant "a short and plain statement" of facts that constitute an alleged wrong. This reform moved the attention of courts from technical scrutiny of words to a more rational consideration of the facts, and opened access to justice far more broadly. + +Alternatives to common law systems + +Civil law systems—comparisons and contrasts to common law + +The main alternative to the common law system is the civil law system, which is used in Continental Europe, and most of Central and South America. + +Judicial decisions play only a minor role in shaping civil law +The primary contrast between the two systems is the role of written decisions and precedent. + +In common law jurisdictions, nearly every case that presents a bona fide disagreement on the law is resolved in a written opinion. The legal reasoning for the decision, known as ratio decidendi, not only determines the court's judgment between the parties, but also stands as precedent for resolving future disputes. In contrast, civil law decisions typically do not include explanatory opinions, and thus no precedent flows from one decision to the next. +In common law systems, a single decided case is binding common law (connotation 1) to the same extent as statute or regulation, under the principle of stare decisis. In contrast, in civil law systems, individual decisions have only advisory, not binding effect. In civil law systems, case law only acquires weight when a long series of cases use consistent reasoning, called jurisprudence constante. Civil law lawyers consult case law to obtain their best prediction of how a court will rule, but comparatively, civil law judges are less bound to follow it. + +For that reason, statutes in civil law systems are more comprehensive, detailed, and continuously updated, covering all matters capable of being brought before a court. + +Adversarial system vs. inquisitorial system +Common law systems tend to give more weight to separation of powers between the judicial branch and the executive branch. In contrast, civil law systems are typically more tolerant of allowing individual officials to exercise both powers. One example of this contrast is the difference between the two systems in allocation of responsibility between prosecutor and adjudicator. + +Common law courts usually use an adversarial system, in which two sides present their cases to a neutral judge. For example, in criminal cases, in adversarial systems, the prosecutor and adjudicator are two separate people. The prosecutor is lodged in the executive branch, and conducts the investigation to locate evidence. That prosecutor presents the evidence to a neutral adjudicator, who makes a decision. + +In contrast, in civil law systems, criminal proceedings proceed under an inquisitorial system in which an examining magistrate serves two roles by first developing the evidence and arguments for one side and then the other during the investigation phase. The examining magistrate then presents the dossier detailing his or her findings to the president of the bench that will adjudicate on the case where it has been decided that a trial shall be conducted. Therefore, the president of the bench's view of the case is not neutral and may be biased while conducting the trial after the reading of the dossier. Unlike the common law proceedings, the president of the bench in the inquisitorial system is not merely an umpire and is entitled to directly interview the witnesses or express comments during the trial, as long as he or she does not express his or her view on the guilt of the accused. + +The proceeding in the inquisitorial system is essentially by writing. Most of the witnesses would have given evidence in the investigation phase and such evidence will be contained in the dossier under the form of police reports. In the same way, the accused would have already put his or her case at the investigation phase but he or she will be free to change his or her evidence at trial. Whether the accused pleads guilty or not, a trial will be conducted. Unlike the adversarial system, the conviction and sentence to be served (if any) will be released by the trial jury together with the president of the trial bench, following their common deliberation. + +In contrast, in an adversarial system, on issues of fact, the onus of framing the case rests on the parties, and judges generally decide the case presented to them, rather than acting as active investigators, or actively reframing the issues presented. "In our adversary system, in both civil and criminal cases, in the first instance and on appeal, we follow the principle of party presentation. That is, we rely on the parties to frame the issues for decision and assign to courts the role of neutral arbiter of matters the parties present." This principle applies with force in all issues in criminal matters, and to factual issues: courts seldom engage in fact gathering on their own initiative, but decide facts on the evidence presented (even here, there are exceptions, for "legislative facts" as opposed to "adjudicative facts"). + +On the other hand, on issues of law, common law courts regularly raise new issues (such as matters of jurisdiction or standing), perform independent research, and reformulate the legal grounds on which to analyze the facts presented to them. The United States Supreme Court regularly decides based on issues raised only in amicus briefs from non-parties. One of the most notable such cases was Erie Railroad v. Tompkins, a 1938 case in which neither party questioned the ruling from the 1842 case Swift v. Tyson that served as the foundation for their arguments, but which led the Supreme Court to overturn Swift during their deliberations. To avoid lack of notice, courts may invite briefing on an issue to ensure adequate notice. However, there are limits—an appeals court may not introduce a theory that contradicts the party's own contentions. + +There are many exceptions in both directions. For example, most proceedings before U.S. federal and state agencies are inquisitorial in nature, at least the initial stages (e.g., a patent examiner, a social security hearing officer, and so on), even though the law to be applied is developed through common law processes. + +Contrasting role of treatises and academic writings in common law and civil law systems +The role of the legal academy presents a significant "cultural" difference between common law (connotation 2) and civil law jurisdictions. In both systems, treatises compile decisions and state overarching principles that (in the author's opinion) explain the results of the cases. In neither system are treatises considered "law", but the weight given them is nonetheless quite different. + +In common law jurisdictions, lawyers and judges tend to use these treatises as only "finding aids" to locate the relevant cases. In common law jurisdictions, scholarly work is seldom cited as authority for what the law is. Chief Justice Roberts noted the "great disconnect between the academy and the profession." When common law courts rely on scholarly work, it is almost always only for factual findings, policy justification, or the history and evolution of the law, but the court's legal conclusion is reached through analysis of relevant statutes and common law, seldom scholarly commentary. + +In contrast, in civil law jurisdictions, courts give the writings of law professors significant weight, partly because civil law decisions traditionally were very brief, sometimes no more than a paragraph stating who wins and who loses. The rationale had to come from somewhere else: the academy often filled that role. + +Narrowing of differences between common law and civil law +The contrast between civil law and common law legal systems has become increasingly blurred, with the growing importance of jurisprudence (similar to case law but not binding) in civil law countries, and the growing importance of statute law and codes in common law countries. + +Examples of common law being replaced by statute or codified rule in the United States include criminal law (since 1812, U.S. federal courts and most but not all of the states have held that criminal law must be embodied in statute if the public is to have fair notice), commercial law (the Uniform Commercial Code in the early 1960s) and procedure (the Federal Rules of Civil Procedure in the 1930s and the Federal Rules of Evidence in the 1970s). But in each case, the statute sets the general principles, but the interstitial common law process determines the scope and application of the statute. + +An example of convergence from the other direction is shown in the 1982 decision Srl CILFIT and Lanificio di Gavardo SpA v Ministry of Health (), in which the European Court of Justice held that questions it has already answered need not be resubmitted. This showed how a historically distinctly common law principle is used by a court composed of judges (at that time) of essentially civil law jurisdiction. + +Other alternatives + +The former Soviet Bloc and other socialist countries used a socialist law system, although there is controversy as to whether socialist law ever constituted a separate legal system or not. + +Much of the Muslim world uses legal systems based on Sharia (also called Islamic law). + +Many churches use a system of canon law. The canon law of the Catholic Church influenced the common law during the medieval period through its preservation of Roman law doctrine such as the presumption of innocence. + +Common law legal systems in the present day + +In jurisdictions around the world +The common law constitutes the basis of the legal systems of: + Australia (both federally and in each of the States and Territories) + Bangladesh + Belize + Brunei + Canada (both federal and the individual provinces, with the exception of Quebec) + the Caribbean jurisdictions of Antigua and Barbuda, Barbados, Bahamas, Dominica, Grenada, Jamaica, St Vincent and the Grenadines, Saint Kitts and Nevis, Trinidad and Tobago + Cyprus + Ghana + Hong Kong + India + Ireland + Israel + Kenya + Nigeria + Malaysia + Malta + Myanmar + New Zealand + Pakistan + Philippines + Singapore + South Africa + United Kingdom (in England, Scotland, Wales, and Northern Ireland) + United States (both the federal system and the individual states and Territories, with the partial exception of Louisiana and Puerto Rico) + +and many other generally English-speaking countries or Commonwealth countries (except Scotland, which is bijuridicial, and Malta). Essentially, every country that was colonised at some time by England, Great Britain, or the United Kingdom uses common law except those that were formerly colonised by other nations, such as Quebec (which follows the bijuridicial law or civil code of France in part), South Africa and Sri Lanka (which follow Roman Dutch law), where the prior civil law system was retained to respect the civil rights of the local colonists. Guyana and Saint Lucia have mixed common law and civil law systems. + +The remainder of this section discusses jurisdiction-specific variants, arranged chronologically. + +Scotland +Scotland is often said to use the civil law system, but it has a unique system that combines elements of an uncodified civil law dating back to the with an element of its own common law long predating the Treaty of Union with England in 1707 (see Legal institutions of Scotland in the High Middle Ages), founded on the customary laws of the tribes residing there. Historically, Scottish common law differed in that the use of precedent was subject to the courts' seeking to discover the principle that justifies a law rather than searching for an example as a precedent, and principles of natural justice and fairness have always played a role in Scots Law. From the 19th century, the Scottish approach to precedent developed into a stare decisis akin to that already established in England thereby reflecting a narrower, more modern approach to the application of case law in subsequent instances. This is not to say that the substantive rules of the common laws of both countries are the same, but in many matters (particularly those of UK-wide interest), they are similar. + +Scotland shares the Supreme Court with England, Wales and Northern Ireland for civil cases; the court's decisions are binding on the jurisdiction from which a case arises but only influential on similar cases arising in Scotland. This has had the effect of converging the law in certain areas. For instance, the modern UK law of negligence is based on Donoghue v Stevenson, a case originating in Paisley, Scotland. + +Scotland maintains a separate criminal law system from the rest of the UK, with the High Court of Justiciary being the final court for criminal appeals. The highest court of appeal in civil cases brought in Scotland is now the Supreme Court of the United Kingdom (before October 2009, final appellate jurisdiction lay with the House of Lords). + +The United States – its states, federal courts, and executive branch agencies (17th century on) +The centuries-old authority of the common law courts in England to develop law case by case and to apply statute law—"legislating from the bench"—is a traditional function of courts, which was carried over into the U.S. system as an essential component of the judicial power for states. Justice Oliver Wendell Holmes Jr. summarized centuries of history in 1917, "judges do and must legislate" (in the federal courts, only interstitially, in state courts, to the full limits of common law adjudicatory authority). + +New York (17th century) +The original colony of New Netherland was settled by the Dutch and the law was also Dutch. When the English captured pre-existing colonies they continued to allow the local settlers to keep their civil law. However, the Dutch settlers revolted against the English and the colony was recaptured by the Dutch. In 1664, the colony of New York had two distinct legal systems: on Manhattan Island and along the Hudson River, sophisticated courts modeled on those of the Netherlands were resolving disputes learnedly in accordance with Dutch customary law. On Long Island, Staten Island, and in Westchester, on the other hand, English courts were administering a crude, untechnical variant of the common law carried from Puritan New England and practiced without the intercession of lawyers. When the English finally regained control of New Netherland they imposed common law upon all the colonists, including the Dutch. This was problematic, as the patroon system of land holding, based on the feudal system and civil law, continued to operate in the colony until it was abolished in the mid-19th century. New York began a codification of its law in the 19th century. The only part of this codification process that was considered complete is known as the Field Code applying to civil procedure. The influence of Roman-Dutch law continued in the colony well into the late 19th century. The codification of a law of general obligations shows how remnants of the civil law tradition in New York continued on from the Dutch days. + +Louisiana (1700s) + +Under Louisiana's codified system, the Louisiana Civil Code, private law—that is, substantive law between private sector parties—is based on principles of law from continental Europe, with some common law influences. These principles derive ultimately from Roman law, transmitted through French law and Spanish law, as the state's current territory intersects the area of North America colonized by Spain and by France. Contrary to popular belief, the Louisiana code does not directly derive from the Napoleonic Code, as the latter was enacted in 1804, one year after the Louisiana Purchase. However, the two codes are similar in many respects due to common roots. + +Louisiana's criminal law largely rests on English common law. Louisiana's administrative law is generally similar to the administrative law of the U.S. federal government and other U.S. states. Louisiana's procedural law is generally in line with that of other U.S. states, which in turn is generally based on the U.S. Federal Rules of Civil Procedure. + +Historically notable among the Louisiana code's differences from common law is the role of property rights among women, particularly in inheritance gained by widows. + +California (1850s) +The U.S. state of California has a system based on common law, but it has codified the law in the manner of civil law jurisdictions. The reason for the enactment of the California Codes in the 19th century was to replace a pre-existing system based on Spanish civil law with a system based on common law, similar to that in most other states. California and a number of other Western states, however, have retained the concept of community property derived from civil law. The California courts have treated portions of the codes as an extension of the common-law tradition, subject to judicial development in the same manner as judge-made common law. (Most notably, in the case Li v. Yellow Cab Co., 13 Cal.3d 804 (1975), the California Supreme Court adopted the principle of comparative negligence in the face of a California Civil Code provision codifying the traditional common-law doctrine of contributory negligence.) + +United States federal courts (1789 and 1938) + +The United States federal government (as opposed to the states) has a variant on a common law system. United States federal courts only act as interpreters of statutes and the constitution by elaborating and precisely defining broad statutory language (connotation 1(b) above), but, unlike state courts, do not generally act as an independent source of common law. + +Before 1938, the federal courts, like almost all other common law courts, decided the law on any issue where the relevant legislature (either the U.S. Congress or state legislature, depending on the issue) had not acted, by looking to courts in the same system, that is, other federal courts, even on issues of state law, and even where there was no express grant of authority from Congress or the Constitution. + +In 1938, the U.S. Supreme Court in Erie Railroad Co. v. Tompkins 304 U.S. 64, 78 (1938), overruled earlier precedent, and held "There is no federal general common law," thus confining the federal courts to act only as interstitial interpreters of law originating elsewhere. E.g., Texas Industries v. Radcliff, (without an express grant of statutory authority, federal courts cannot create rules of intuitive justice, for example, a right to contribution from co-conspirators). Post-1938, federal courts deciding issues that arise under state law are required to defer to state court interpretations of state statutes, or reason what a state's highest court would rule if presented with the issue, or to certify the question to the state's highest court for resolution. + +Later courts have limited Erie slightly, to create a few situations where United States federal courts are permitted to create federal common law rules without express statutory authority, for example, where a federal rule of decision is necessary to protect uniquely federal interests, such as foreign affairs, or financial instruments issued by the federal government. See, e.g., Clearfield Trust Co. v. United States, (giving federal courts the authority to fashion common law rules with respect to issues of federal power, in this case negotiable instruments backed by the federal government); see also International News Service v. Associated Press, 248 U.S. 215 (1918) (creating a cause of action for misappropriation of "hot news" that lacks any statutory grounding); but see National Basketball Association v. Motorola, Inc., 105 F.3d 841, 843–44, 853 (2d Cir. 1997) (noting continued vitality of INS "hot news" tort under New York state law, but leaving open the question of whether it survives under federal law). Except on Constitutional issues, Congress is free to legislatively overrule federal courts' common law. + +United States executive branch agencies (1946) +Most executive branch agencies in the United States federal government have some adjudicatory authority. To greater or lesser extent, agencies honor their own precedent to ensure consistent results. Agency decision making is governed by the Administrative Procedure Act of 1946. + +For example, the National Labor Relations Board issues relatively few regulations, but instead promulgates most of its substantive rules through common law (connotation 1). + +India, Pakistan, and Bangladesh (19th century and 1948) +The law of India, Pakistan, and Bangladesh are largely based on English common law because of the long period of British colonial influence during the period of the British Raj. + +Ancient India represented a distinct tradition of law, and had a historically independent school of legal theory and practice. The Arthashastra, dating from 400 BCE and the Manusmriti, from 100 CE, were influential treatises in India, texts that were considered authoritative legal guidance. Manu's central philosophy was tolerance and pluralism, and was cited across Southeast Asia. Early in this period, which finally culminated in the creation of the Gupta Empire, relations with ancient Greece and Rome were not infrequent. The appearance of similar fundamental institutions of international law in various parts of the world show that they are inherent in international society, irrespective of culture and tradition. Inter-State relations in the pre-Islamic period resulted in clear-cut rules of warfare of a high humanitarian standard, in rules of neutrality, of treaty law, of customary law embodied in religious charters, in exchange of embassies of a temporary or semi-permanent character. + +When India became part of the British Empire, there was a break in tradition, and Hindu and Islamic law were supplanted by the common law. After the failed rebellion against the British in 1857, the British Parliament took over control of India from the British East India Company, and British India came under the direct rule of the Crown. The British Parliament passed the Government of India Act 1858 to this effect, which set up the structure of British government in India. It established in Britain the office of the Secretary of State for India through whom the Parliament would exercise its rule, along with a Council of India to aid him. It also established the office of the Governor-General of India along with an Executive Council in India, which consisted of high officials of the British Government. As a result, the present judicial system of the country derives largely from the British system and has little correlation to the institutions of the pre-British era. + +Post-partition India (1948) + +Post-partition, India retained its common law system. Much of contemporary Indian law shows substantial European and American influence. Legislation first introduced by the British is still in effect in modified form today. During the drafting of the Indian Constitution, laws from Ireland, the United States, Britain, and France were all synthesized to produce a refined set of Indian laws. Indian laws also adhere to the United Nations guidelines on human rights law and environmental law. Certain international trade laws, such as those on intellectual property, are also enforced in India. + +Post-partition Pakistan (1948) + +Post-partition, Pakistan retained its common law system. + +Post-partition Bangladesh (1968) + +Post-partition, Bangladesh retained its common law system. + +Canada (1867) + +Canada has separate federal and provincial legal systems. + +Canadian provincial legal systems + +Each province and territory is considered a separate jurisdiction with respect to case law. Each has its own procedural law in civil matters, statutorily created provincial courts and superior trial courts with inherent jurisdiction culminating in the Court of Appeal of the province. These Courts of Appeal are then subject to the Supreme Court of Canada in terms of appeal of their decisions. + +All but one of the provinces of Canada use a common law system for civil matters (the exception being Quebec, which uses a French-heritage civil law system for issues arising within provincial jurisdiction, such as property ownership and contracts). + +Canadian federal legal system + +Canadian Federal Courts operate under a separate system throughout Canada and deal with narrower range of subject matter than superior courts in each province and territory. They only hear cases on subjects assigned to them by federal statutes, such as immigration, intellectual property, judicial review of federal government decisions, and admiralty. The Federal Court of Appeal is the appellate court for federal courts and hears cases in multiple cities; unlike the United States, the Canadian Federal Court of Appeal is not divided into appellate circuits. + +Canadian federal statutes must use the terminology of both the common law and civil law for civil matters; this is referred to as legislative bijuralism. + +Canadian criminal law +Criminal law is uniform throughout Canada. It is based on the federal statutory Criminal Code, which in addition to substance also details procedural law. The administration of justice are the responsibilities of the provinces. Canadian criminal law uses a common law system no matter which province a case proceeds. + +Nicaragua +Nicaragua's legal system is also a mixture of the English Common Law and Civil Law. This situation was brought through the influence of British administration of the Eastern half of the Mosquito Coast from the mid-17th century until about 1894, the William Walker period from about 1855 through 1857, US interventions/occupations during the period from 1909 to 1933, the influence of US institutions during the Somoza family administrations (1933 through 1979) and the considerable importation between 1979 and the present of US culture and institutions. + +Israel (1948) +Israel has no formal written constitution. Its basic principles are inherited from the law of the British Mandate of Palestine and thus resemble those of British and American law, namely: the role of courts in creating the body of law and the authority of the supreme court in reviewing and if necessary overturning legislative and executive decisions, as well as employing the adversarial system. However, because Israel has no written constitution, basic laws can be changed by a vote of 61 out of 120 votes in the parliament. One of the primary reasons that the Israeli constitution remains unwritten is the fear by whatever party holds power that creating a written constitution, combined with the common-law elements, would severely limit the powers of the Knesset (which, following the doctrine of parliamentary sovereignty, holds near-unlimited power). + +Roman Dutch common law +Roman Dutch common law is a bijuridical or mixed system of law similar to the common law system in Scotland and Louisiana. Roman Dutch common law jurisdictions include South Africa, Botswana, Lesotho, Namibia, Swaziland, Sri Lanka and Zimbabwe. Many of these jurisdictions recognise customary law, and in some, such as South Africa the Constitution requires that the common law be developed in accordance with the Bill of Rights. Roman Dutch common law is a development of Roman Dutch law by courts in the Roman Dutch common law jurisdictions. During the Napoleonic wars the Kingdom of the Netherlands adopted the French code civil in 1809, however the Dutch colonies in the Cape of Good Hope and Sri Lanka, at the time called Ceylon, were seized by the British to prevent them being used as bases by the French Navy. The system was developed by the courts and spread with the expansion of British colonies in Southern Africa. Roman Dutch common law relies on legal principles set out in Roman law sources such as Justinian's Institutes and Digest, and also on the writing of Dutch jurists of the 17th century such as Grotius and Voet. In practice, the majority of decisions rely on recent precedent. + +Ghana +Ghana follows the English common law tradition which was inherited from the British during her colonisation. Consequently, the laws of Ghana are, for the most part, a modified version of imported law that is continuously adapting to changing socio-economic and political realities of the country. The Bond of 1844 marked the period when the people of Ghana (then Gold Coast) ceded their independence to the British and gave the British judicial authority. Later, the Supreme Court Ordinance of 1876 formally introduced British law, be it the common law or statutory law, in the Gold Coast. Section 14 of the Ordinance formalised the application of the common-law tradition in the country. + +Ghana, after independence, did not do away with the common law system inherited from the British, and today it has been enshrined in the 1992 Constitution of the country. Chapter four of Ghana's Constitution, entitled "The Laws of Ghana", has in Article 11(1) the list of laws applicable in the state. This comprises (a) the Constitution; (b) enactments made by or under the authority of the Parliament established by the Constitution; (c) any Orders, Rules and Regulations made by any person or authority under a power conferred by the Constitution; (d) the existing law; and (e) the common law. Thus, the modern-day Constitution of Ghana, like those before it, embraced the English common law by entrenching it in its provisions. The doctrine of judicial precedence which is based on the principle of stare decisis as applied in England and other pure common law countries also applies in Ghana. + +Scholarly works + +Edward Coke, a 17th-century Lord Chief Justice of the English Court of Common Pleas and a Member of Parliament (MP), wrote several legal texts that collected and integrated centuries of case law. Lawyers in both England and America learned the law from his Institutes and Reports until the end of the 18th century. His works are still cited by common law courts around the world. + +The next definitive historical treatise on the common law is Commentaries on the Laws of England, written by Sir William Blackstone and first published in 1765–1769. Since 1979, a facsimile edition of that first edition has been available in four paper-bound volumes. Today it has been superseded in the English part of the United Kingdom by Halsbury's Laws of England that covers both common and statutory English law. + +While he was still on the Massachusetts Supreme Judicial Court, and before being named to the U.S. Supreme Court, Justice Oliver Wendell Holmes Jr. published a short volume called The Common Law, which remains a classic in the field. Unlike Blackstone and the Restatements, Holmes' book only briefly discusses what the law is; rather, Holmes describes the common law process. Law professor John Chipman Gray's The Nature and Sources of the Law, an examination and survey of the common law, is also still commonly read in U.S. law schools. + +In the United States, Restatements of various subject matter areas (Contracts, Torts, Judgments, and so on.), edited by the American Law Institute, collect the common law for the area. The ALI Restatements are often cited by American courts and lawyers for propositions of uncodified common law, and are considered highly persuasive authority, just below binding precedential decisions. The Corpus Juris Secundum is an encyclopedia whose main content is a compendium of the common law and its variations throughout the various state jurisdictions. + +Scots common law covers matters including murder and theft, and has sources in custom, in legal writings and previous court decisions. The legal writings used are called Institutional Texts and come mostly from the 17th, 18th and 19th centuries. Examples include Craig, Jus Feudale (1655) and Stair, The Institutions of the Law of Scotland (1681). + +See also + Outline of law + +Common law national legal systems today + List of common law national legal systems + +Common vs. civil laws + Civil law + Common law offences + +Development of English legal system and case law + Books of authority + Lists of case law + +Early common law systems + Anglo-Saxon law + Brehon law, or Irish law + Doom book, or Code of Alfred the Great + Time immemorial + +Stages of common law trials + Arraignment + Grand jury + Jury trial + +Common law in specific areas + +Common law as applied to matrimony + Alimony + Common-law marriage + +Employment + Faithless servant + +Slavery + Slavery at common law + +References + +Further reading + Chapters 1–6. + + + + + + + + + + Milsom, S.F.C., A Natural History of the Common Law. Columbia University Press (2003) + Milsom, S.F.C., Historical Foundations of the Common Law (2nd ed.). Lexis Law Publishing (Va), (1981) + +External links + + The History of the Common Law of England, and An analysis of the civil part of the law, Matthew Hale + The History of English Law before the Time of Edward I, Pollock and Maitland + Select Writs. (F.W.Maitland) + Common-law Pleading: its history and principles, R.Ross Perry, (Boston, 1897) + ; also available at The Climate Change and Public Health Law Site + The Principle of stare decisis American Law Register + The Australian Institute of Comparative Legal Systems + The International Institute for Law and Strategic Studies (IILSS) + New South Wales Legislation + Historical Laws of Hong Kong Online – University of Hong Kong Libraries, Digital Initiatives + Maxims of Common Law from Bouvier's 1856 Law Dictionary + + +Legal history +Legal systems +Civil law may refer to: + Civil law (common law), the part of law that concerns private citizens and legal persons + Civil law (legal system), or continental law, a legal system originating in continental Europe and based on Roman law + Private law, the branch of law in a civil law legal system that concerns relations among private individuals + Municipal law, the domestic law of a state, as opposed to international law + +See also + Civil code + Civil (disambiguation) + Ius civile, Latin for "civil law" + Common law (disambiguation) + Criminal law +A court of appeals is generally an appellate court. + +Court of Appeals may refer to: + +Israeli Military Court of Appeals + (Italy) +Court of Appeals of the Philippines +High Court of Appeals of Turkey +Court of Appeals (Vatican City) + +United States +Courts of appeals +Court of Appeals for the Armed Forces +Court of Appeals for Veterans Claims +Court of Appeals for the Federal Circuit +Court of Appeals for the District of Columbia Circuit +Court of Appeals for the First Circuit +Court of Appeals for the Second Circuit +Court of Appeals for the Third Circuit +Court of Appeals for the Fourth Circuit +Court of Appeals for the Fifth Circuit +Court of Appeals for the Sixth Circuit +Court of Appeals for the Seventh Circuit +Court of Appeals for the Eighth Circuit +Court of Appeals for the Ninth Circuit +Court of Appeals for the Tenth Circuit +Court of Appeals for the Eleventh Circuit +Emergency Court of Appeals +Temporary Emergency Court of Appeals (defunct) +Alabama Court of Appeals (existed until 1969) +Alaska Court of Appeals +Arizona Court of Appeals +Arkansas Court of Appeals +Colorado Court of Appeals +District of Columbia Court of Appeals +Georgia Court of Appeals +Hawaii Intermediate Court of Appeals +Idaho Court of Appeals +Illinois Court of Appeals +Indiana Court of Appeals +Iowa Court of Appeals +Kansas Court of Appeals +Kentucky Court of Appeals +Louisiana Court of Appeals +Maryland Court of Appeals +Michigan Court of Appeals +Minnesota Court of Appeals +Mississippi Court of Appeals +Missouri Court of Appeals +Nebraska Court of Appeals +New Mexico Court of Appeals +New York Court of Appeals +North Carolina Court of Appeals +North Dakota Court of Appeals +Ohio Seventh District Court of Appeals +Ohio Eleventh District Court of Appeals +Oregon Court of Appeals +South Carolina Court of Appeals +Tennessee Court of Appeals +Texas Courts of Appeals +Fifth Court of Appeals +Utah Court of Appeals +Court of Appeals of Virginia +Washington Court of Appeals +Supreme Court of Appeals of West Virginia +Wisconsin Court of Appeals + +See also + +Court of Appeal (disambiguation) +Court of Criminal Appeal (disambiguation) +Appeal +State court (United States)#Nomenclature +List of legal topics +Federal Court of Appeals (disambiguation) +Common descent is a concept in evolutionary biology applicable when one species is the ancestor of two or more species later in time. According to modern evolutionary biology, all living beings could be descendants of a unique ancestor commonly referred to as the last universal common ancestor (LUCA) of all life on Earth. + +Common descent is an effect of speciation, in which multiple species derive from a single ancestral population. The more recent the ancestral population two species have in common, the more closely are they related. The most recent common ancestor of all currently living organisms is the last universal ancestor, which lived about 3.9 billion years ago. The two earliest pieces of evidence for life on Earth are graphite found to be biogenic in 3.7 billion-year-old metasedimentary rocks discovered in western Greenland and microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. All currently living organisms on Earth share a common genetic heritage, though the suggestion of substantial horizontal gene transfer during early evolution has led to questions about the monophyly (single ancestry) of life. 6,331 groups of genes common to all living animals have been identified; these may have arisen from a single common ancestor that lived 650 million years ago in the Precambrian. + +Universal common descent through an evolutionary process was first proposed by the British naturalist Charles Darwin in the concluding sentence of his 1859 book On the Origin of Species: + +History + +The idea that all living things (including things considered non-living by science) are related is a recurring theme in many indigenous worldviews across the world. Later on, in the 1740s, the French mathematician Pierre Louis Maupertuis arrived at the idea that all organisms had a common ancestor, and had diverged through random variation and natural selection. In Essai de cosmologie (1750), Maupertuis noted: + +May we not say that, in the fortuitous combination of the productions of Nature, since only those creatures could survive in whose organizations a certain degree of adaptation was present, there is nothing extraordinary in the fact that such adaptation is actually found in all these species which now exist? Chance, one might say, turned out a vast number of individuals; a small proportion of these were organized in such a manner that the animals' organs could satisfy their needs. A much greater number showed neither adaptation nor order; these last have all perished.... Thus the species which we see today are but a small part of all those that a blind destiny has produced. + +In 1790, the philosopher Immanuel Kant wrote in Kritik der Urteilskraft (Critique of Judgment) that the similarity of animal forms implies a common original type, and thus a common parent. + +In 1794, Charles Darwin's grandfather, Erasmus Darwin asked: +[W]ould it be too bold to imagine, that in the great length of time, since the earth began to exist, perhaps millions of ages before the commencement of the history of mankind, would it be too bold to imagine, that all warm-blooded animals have arisen from one living filament, which endued with animality, with the power of acquiring new parts attended with new propensities, directed by irritations, sensations, volitions, and associations; and thus possessing the faculty of continuing to improve by its own inherent activity, and of delivering down those improvements by generation to its posterity, world without end? + +Charles Darwin's views about common descent, as expressed in On the Origin of Species, were that it was probable that there was only one progenitor for all life forms: + +Therefore I should infer from analogy that probably all the organic beings which have ever lived on this earth have descended from some one primordial form, into which life was first breathed. + +But he precedes that remark by, "Analogy would lead me one step further, namely, to the belief that all animals and plants have descended from some one prototype. But analogy may be a deceitful guide." And in the subsequent edition, he asserts rather, "We do not know all the possible transitional gradations between the simplest and the most perfect organs; it cannot be pretended that we know all the varied means of Distribution during the long lapse of years, or that we know how imperfect the Geological Record is. Grave as these several difficulties are, in my judgment they do not overthrow the theory of descent from a few created forms with subsequent modification". + +Common descent was widely accepted amongst the scientific community after Darwin's publication. In 1907, Vernon Kellogg commented that "practically no naturalists of position and recognized attainment doubt the theory of descent." + +In 2008, biologist T. Ryan Gregory noted that: + +No reliable observation has ever been found to contradict the general notion of common descent. It should come as no surprise, then, that the scientific community at large has accepted evolutionary descent as a historical reality since Darwin’s time and considers it among the most reliably established and fundamentally important facts in all of science. + +Evidence + +Common biochemistry + +All known forms of life are based on the same fundamental biochemical organization: genetic information encoded in DNA, transcribed into RNA, through the effect of protein- and RNA-enzymes, then translated into proteins by (highly similar) ribosomes, with ATP, NADPH and others as energy sources. Analysis of small sequence differences in widely shared substances such as cytochrome c further supports universal common descent. Some 23 proteins are found in all organisms, serving as enzymes carrying out core functions like DNA replication. The fact that only one such set of enzymes exists is convincing evidence of a single ancestry. 6,331 genes common to all living animals have been identified; these may have arisen from a single common ancestor that lived 650 million years ago in the Precambrian. + +Common genetic code + +The genetic code (the "translation table" according to which DNA information is translated into amino acids, and hence proteins) is nearly identical for all known lifeforms, from bacteria and archaea to animals and plants. The universality of this code is generally regarded by biologists as definitive evidence in favor of universal common descent. + +The way that codons (DNA triplets) are mapped to amino acids seems to be strongly optimised. Richard Egel argues that in particular the hydrophobic (non-polar) side-chains are well organised, suggesting that these enabled the earliest organisms to create peptides with water-repelling regions able to support the essential electron exchange (redox) reactions for energy transfer. + +Selectively neutral similarities + +Similarities which have no adaptive relevance cannot be explained by convergent evolution, and therefore they provide compelling support for universal common descent. Such evidence has come from two areas: amino acid sequences and DNA sequences. Proteins with the same three-dimensional structure need not have identical amino acid sequences; any irrelevant similarity between the sequences is evidence for common descent. In certain cases, there are several codons (DNA triplets) that code redundantly for the same amino acid. Since many species use the same codon at the same place to specify an amino acid that can be represented by more than one codon, that is evidence for their sharing a recent common ancestor. Had the amino acid sequences come from different ancestors, they would have been coded for by any of the redundant codons, and since the correct amino acids would already have been in place, natural selection would not have driven any change in the codons, however much time was available. Genetic drift could change the codons, but it would be extremely unlikely to make all the redundant codons in a whole sequence match exactly across multiple lineages. Similarly, shared nucleotide sequences, especially where these are apparently neutral such as the positioning of introns and pseudogenes, provide strong evidence of common ancestry. + +Other similarities + +Biologists often point to the universality of many aspects of cellular life as supportive evidence to the more compelling evidence listed above. These similarities include the energy carrier adenosine triphosphate (ATP), and the fact that all amino acids found in proteins are left-handed. It is, however, possible that these similarities resulted because of the laws of physics and chemistry - rather than through universal common descent - and therefore resulted in convergent evolution. In contrast, there is evidence for homology of the central subunits of transmembrane ATPases throughout all living organisms, especially how the rotating elements are bound to the membrane. This supports the assumption of a LUCA as a cellular organism, although primordial membranes may have been semipermeable and evolved later to the membranes of modern bacteria, and on a second path to those of modern archaea also. + +Phylogenetic trees + +Another important piece of evidence is from detailed phylogenetic trees (i.e., "genealogic trees" of species) mapping out the proposed divisions and common ancestors of all living species. In 2010, Douglas L. Theobald published a statistical analysis of available genetic data, mapping them to phylogenetic trees, that gave "strong quantitative support, by a formal test, for the unity of life." + +Traditionally, these trees have been built using morphological methods, such as appearance, embryology, etc. Recently, it has been possible to construct these trees using molecular data, based on similarities and differences between genetic and protein sequences. All these methods produce essentially similar results, even though most genetic variation has no influence over external morphology. That phylogenetic trees based on different types of information agree with each other is strong evidence of a real underlying common descent. + +Objections + +Gene exchange clouds phylogenetic analysis + +Theobald noted that substantial horizontal gene transfer could have occurred during early evolution. Bacteria today remain capable of gene exchange between distantly-related lineages. This weakens the basic assumption of phylogenetic analysis, that similarity of genomes implies common ancestry, because sufficient gene exchange would allow lineages to share much of their genome whether or not they shared an ancestor (monophyly). This has led to questions about the single ancestry of life. However, biologists consider it very unlikely that completely unrelated proto-organisms could have exchanged genes, as their different coding mechanisms would have resulted only in garble rather than functioning systems. Later, however, many organisms all derived from a single ancestor could readily have shared genes that all worked in the same way, and it appears that they have. + +Convergent evolution + +If early organisms had been driven by the same environmental conditions to evolve similar biochemistry convergently, they might independently have acquired similar genetic sequences. Theobald's "formal test" was accordingly criticised by Takahiro Yonezawa and colleagues for not including consideration of convergence. They argued that Theobald's test was insufficient to distinguish between the competing hypotheses. Theobald has defended his method against this claim, arguing that his tests distinguish between phylogenetic structure and mere sequence similarity. Therefore, Theobald argued, his results show that "real universally conserved proteins are homologous." + +RNA world + +The possibility is mentioned, above, that all living organisms may be descended from an original single-celled organism with a DNA genome, and that this implies a single origin for life. Although such a universal common ancestor may have existed, such a complex entity is unlikely to have arisen spontaneously from non-life and thus a cell with a DNA genome cannot reasonably be regarded as the “origin” of life. To understand the “origin” of life, it has been proposed that DNA based cellular life descended from relatively simple pre-cellular self-replicating RNA molecules able to undergo natural selection. During the course of evolution, this RNA world was replaced by the evolutionary emergence of the DNA world. A world of independently self-replicating RNA genomes apparently no longer exists (RNA viruses are dependent on host cells with DNA genomes). Because the RNA world is apparently gone, it is not clear how scientific evidence could be brought to bear on the question of whether there was a single “origin” of life event from which all life descended. + +See also + + The Ancestor's Tale + Urmetazoan + +Bibliography + + + The book is available from The Complete Work of Charles Darwin Online. Retrieved 2015-11-23. + Retrieved 2015-11-23. + +Notes + +References + +External links + 29+ Evidences for Macroevolution: The Scientific Case for Common Descent from the TalkOrigins Archive. + The Tree of Life Web Project + +Evolutionary biology +Descent +Most recent common ancestors +Celtic music is a broad grouping of music genres that evolved out of the folk music traditions of the Celtic people of Northwestern Europe (the modern Celtic nations). It refers to both orally-transmitted traditional music and recorded music and the styles vary considerably to include everything from traditional music to a wide range of hybrids. + +Description and definition +Celtic music means two things mainly. First, it is the music of the people that identify themselves as Celts. Secondly, it refers to whatever qualities may be unique to the music of the Celtic nations. Many notable Celtic musicians such as Alan Stivell and Paddy Moloney claim that the different Celtic music genres have a lot in common. + +These following melodic practices may be used widely across the different variants of Celtic Music: + +It is common for the melodic line to move up and down the primary chords in many Celtic songs. There are a number of possible reasons for this: +Melodic variation can be easily introduced. Melodic variation is widely used in Celtic music, especially by the pipes and harp. +It is easier to anticipate the direction that the melody will take, so that harmony either composed or improvised can be introduced: clichéd cadences that are essential for impromptu harmony are also more easily formed. +The relatively wider tonal intervals in some songs make it possible for stress accents within the poetic line to be more in keeping with the local Celtic accent. +Across just one Celtic group. +By more than one Celtic language population belonging to different Celtic groups. + +These two latter usage patterns may simply be remnants of formerly widespread melodic practices. + +Often, the term Celtic music is applied to the music of Ireland and Scotland because both lands have produced well-known distinctive styles which actually have genuine commonality and clear mutual influences. The definition is further complicated by the fact that Irish independence has allowed Ireland to promote 'Celtic' music as a specifically Irish product. However, these are modern geographical references to a people who share a common Celtic ancestry and consequently, a common musical heritage. + +These styles are known because of the importance of Irish and Scottish people in the English speaking world, especially in the United States, where they had a profound impact on American music, particularly bluegrass and country music. The music of Wales, Cornwall, the Isle of Man, Brittany, Galician traditional music (Spain) and music of Portugal are also considered Celtic music, the tradition being particularly strong in Brittany, where Celtic festivals large and small take place throughout the year, and in Wales, where the ancient eisteddfod tradition has been revived and flourishes. Additionally, the musics of ethnically Celtic peoples abroad are vibrant, especially in Canada and the United States. In Canada the provinces of Atlantic Canada are known for being a home of Celtic music, most notably on the islands of Newfoundland, Cape Breton and Prince Edward Island. The traditional music of Atlantic Canada is heavily influenced by the Irish, Scottish and Acadian ethnic makeup of much of the region's communities. In some parts of Atlantic Canada, such as Newfoundland, Celtic music is as or more popular than in the old country. Further, some older forms of Celtic music that are rare in Scotland and Ireland today, such as the practice of accompanying a fiddle with a piano, or the Gaelic spinning songs of Cape Breton remain common in the Maritimes. Much of the music of this region is Celtic in nature, but originates in the local area and celebrates the sea, seafaring, fishing and other primary industries. + +Instruments associated with Celtic Music include the Celtic harp, uilleann pipes or Great Highland bagpipe, fiddle, tin whistle, flute, bodhrán, bones, concertina, accordion and a recent addition, the Irish bouzouki. + +Divisions + +In Celtic Music: A Complete Guide, June Skinner Sawyers acknowledges six Celtic nationalities divided into two groups according to their linguistic heritage. The Q-Celtic nationalities are the Irish, Scottish and Manx peoples, while the P-Celtic groups are the Cornish, Bretons and Welsh peoples. Musician Alan Stivell uses a similar dichotomy, between the Gaelic (Irish/Scottish/Manx) and the Brythonic (Breton/Welsh/Cornish) branches, which differentiate "mostly by the extended range (sometimes more than two octaves) of Irish and Scottish melodies and the closed range of Breton and Welsh melodies (often reduced to a half-octave), and by the frequent use of the pure pentatonic scale in Gaelic music." + +There is also tremendous variation between Celtic regions. Ireland, Scotland, Wales, Cornwall, and Brittany have living traditions of language and music, and there has been a recent major revival of interest in Celtic heritage in the Isle of Man. Galicia has a Celtic language revival movement to revive the Q-Celtic Gallaic language used into Roman times., which is not an attested language unlike Celtiberian. A Brythonic language may have been spoken in parts of Galicia and Asturias into early Medieval times brought by Britons fleeing the Anglo-Saxon invasions via Brittany., but here again there are several hypotheses and very little traces of it : lack of archeological, linguistic evidence and documents. The Romance language currently spoken in Galicia, Galician (Galego) is closely related to the Portuguese language used mainly in Brazil and Portugal and in many ways closer to Latin than other Romance languages. Galician music is claimed to be Celtic. The same is true of the music of Asturias, Cantabria, and that of Northern Portugal (some say even traditional music from Central Portugal can be labeled Celtic). + +Breton artist Alan Stivell was one of the earliest musicians to use the word Celtic and Keltia in his marketing materials, starting in the early 1960s as part of the worldwide folk music revival of that era with the term quickly catching on with other artists worldwide. Today, the genre is well established and incredibly diverse. + +Forms +There are musical genres and styles specific to each Celtic country, due in part to the influence of individual song traditions and the characteristics of specific languages: + Celtic traditional music + Music of Ireland + Music of Scotland + Music of Wales + Strathspeys are specific to Highland Scotland, for example, and it has been hypothesized that they mimic the rhythms of the Scottish Gaelic language. + Reels + Pibroch + Cerdd Dant (string music) or Canu Penillion (verse singing) is the art of vocal improvisation over a given melody in Welsh musical tradition. It is an important competition in eisteddfodau. The singer or (small) choir sings a counter melody over a harp melody. + Waulking song + Puirt à beul + Kan ha diskan + Sean-nós singing + Celtic hip hop + Celtic rock + Celtic metal + Celtic punk + Celtic fusion + Progressive music + Folk music + +Festivals +See list of Celtic festivals for a more complete list of Celtic festivals by country, including music festivals. Festivals focused largely or partly on Celtic music can be found at :Category:Celtic music festivals. +The modern Celtic music scene involves a large number of music festivals, as it has traditionally. Some of the most prominent festivals focused solely on music include: +Festival Internacional do Mundo Celta de Ortigueira (Ortigueira, Galicia, Spain) +Festival Intercéltico de Avilés (Avilés, Asturies, Spain) +Folixa na Primavera (Mieres, Asturies, Spain) +Festival Celta Internacional Reino de León, (León, Spain) +Festival Internacional de Música Celta de Collado Villalba (Collado Villalba, Spain) +Yn Chruinnaght (Isle of Man) +Celtic Connections (Glasgow, Scotland) +Hebridean Celtic Festival (Stornoway, Scotland) + +Fleadh ceol na hÉireann (Tullamore, Ireland) +Festival Intercéltico de Sendim (Sendim, Portugal) +Galaicofolia (Esposende, Portugal) +Festival Folk Celta Ponte da Barca (Ponte da Barca, Portugal) +Douro Celtic Fest (Vila Nova de Gaia, Portugal) +Festival Interceltique de Lorient (Lorient, France) +Festival del Kan ar Bobl (Lorient, France) +Festival de Cornouaille (Quimper, France) +Les Nuits Celtiques du Stade de France (Paris, France) +Montelago Celtic Night (Colfiorito, Macerata, Italy) +Triskell International Celtic Festival (Trieste, Italy) + Festival celtique de Québec or Québec city celtic festival, (Quebec city, Quebec, Canada) +Festival Mémoire et Racines (Saint-Charles-Borromée, Quebec, Canada) +Celtic Colours (Cape Breton, Nova Scotia, Canada) +Paganfest (Tour through Europe) + +Celtic fusion + +The oldest musical tradition which fits under the label of Celtic fusion originated in the rural American south in the early colonial period and incorporated English, Scottish, Irish, Welsh, German, and African influences. Variously referred to as roots music, American folk music, or old-time music, this tradition has exerted a strong influence on all forms of American music, including country, blues, and rock and roll. In addition to its lasting effects on other genres, it marked the first modern large-scale mixing of musical traditions from multiple ethnic and religious communities within the Celtic diaspora. + +In the 1960s several bands put forward modern adaptations of Celtic music pulling influences from several of the Celtic nations at once to create a modern pan-celtic sound. A few of those include bagadoù (Breton pipe bands), Fairport Convention, Pentangle, Steeleye Span and Horslips. + +In the 1970s Clannad made their mark initially in the folk and traditional scene, and then subsequently went on to bridge the gap between traditional Celtic and pop music in the 1980s and 1990s, incorporating elements from new-age, smooth jazz, and folk rock. Traces of Clannad's legacy can be heard in the music of many artists, including Altan, Anúna, Capercaillie, the Corrs, Dexys Midnight Runners, Enya, Loreena McKennitt, Riverdance, Donna Taggart, and U2. The solo music of Clannad's lead singer, Moya Brennan (often referred to as the First Lady of Celtic Music) has further enhanced this influence. + +Later, beginning in 1982 with the Pogues' invention of Celtic folk-punk and Stockton's Wing blend of Irish traditional and Pop, Rock and Reggae, there has been a movement to incorporate Celtic influences into other genres of music. Bands like Flogging Molly, Black 47, Dropkick Murphys, the Young Dubliners, the Tossers introduced a hybrid of Celtic rock, punk, reggae, hardcore and other elements in the 1990s that has become popular with Irish-American youth. + +Today there are Celtic-influenced subgenres of virtually every type of popular music including electronica, rock, metal, punk, hip hop, reggae, new-age, Latin, Andean and pop. Collectively these modern interpretations of Celtic music are sometimes referred to as Celtic fusion. + +Other modern adaptations +Outside of America, the first deliberate attempts to create a "Pan-Celtic music" were made by the Breton Taldir Jaffrennou, having translated songs from Ireland, Scotland, and Wales into Breton between the two world wars. One of his major works was to bring "Hen Wlad Fy Nhadau" (the Welsh national anthem) back in Brittany and create lyrics in Breton. Eventually this song became "Bro goz va zadoù" ("Old land of my fathers") and is the most widely accepted Breton anthem. In the 70s, the Breton Alan Cochevelou (future Alan Stivell) began playing a mixed repertoire from the main Celtic countries on the Celtic harp his father created. +Probably the most successful all-inclusive Celtic music composition in recent years is Shaun Daveys composition The Pilgrim. This suite depicts the journey of St. Colum Cille through the Celtic nations of Ireland, Scotland, the Isle of Man, Wales, Cornwall, Brittany and Galicia. The suite which includes a Scottish pipe band, Irish and Welsh harpists, Galician gaitas, Irish uilleann pipes, the bombardes of Brittany, two vocal soloists and a narrator is set against a background of a classical orchestra and a large choir. + +Modern music may also be termed "Celtic" because it is written and recorded in a Celtic language, regardless of musical style. Many of the Celtic languages have experienced resurgences in modern years, spurred on partly by the action of artists and musicians who have embraced them as hallmarks of identity and distinctness. In 1971, the Irish band Skara Brae recorded its only LP (simply called Skara Brae), all songs in Irish. In 1978 Runrig recorded an album in Scottish Gaelic. In 1992 Capercaillie recorded "A Prince Among Islands", the first Scottish Gaelic language record to reach the UK top 40. In 1996, a song in Breton represented France in the 41st Eurovision Song Contest, the first time in history that France had a song without a word in French. Since about 2005, Oi Polloi (from Scotland) have recorded in Scottish Gaelic. Mill a h-Uile Rud (a Scottish Gaelic punk band from Seattle) recorded in the language in 2004. + +Several contemporary bands have Welsh language songs, such as Ceredwen, which fuses traditional instruments with trip hop beats, the Super Furry Animals, Fernhill, and so on (see the Music of Wales article for more Welsh and Welsh-language bands). The same phenomenon occurs in Brittany, where many singers record songs in Breton, traditional or modern (hip hop, rap, and so on.). + +See also + +Folk music of Ireland +Music of Brittany +Music of Cornwall +Galician traditional music +Music of the Isle of Man +Music of Scotland +Music of Wales +Music of Portugal +Traditional Gaelic music + +References + +External links + + Celtic melody library + Free sheet music on CelticScores.com + Free sheet music, chords, midis at Vashon Celtic Tunes + + +European music +Culture of Ireland +A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object. + +The origins of the earliest constellations likely go back to prehistory. People used them to relate stories of their beliefs, experiences, creation, or mythology. Different cultures and countries invented their own constellations, some of which lasted into the early 20th century before today's constellations were internationally recognized. The recognition of constellations has changed significantly over time. Many changed in size or shape. Some became popular, only to drop into obscurity. Some were limited to a single culture or nation. Naming constellations also helped astronomers and navigators identify stars more easily. + +Twelve (or thirteen) ancient constellations belong to the zodiac (straddling the ecliptic, which the Sun, Moon, and planets all traverse). The origins of the zodiac remain historically uncertain; its astrological divisions became prominent 400 BC in Babylonian or Chaldean astronomy. Constellations appear in Western culture via Greece and are mentioned in the works of Hesiod, Eudoxus and Aratus. The traditional 48 constellations, consisting of the Zodiac and 36 more (now 38, following the division of Argo Navis into three constellations) are listed by Ptolemy, a Greco-Roman astronomer from Alexandria, Egypt, in his Almagest. The formation of constellations was the subject of extensive mythology, most notably in the Metamorphoses of the Latin poet Ovid. Constellations in the far southern sky were added from the 15th century until the mid-18th century when European explorers began traveling to the Southern Hemisphere. Due to Roman and European transmission, each constellation has a Latin name. + +In 1922, the International Astronomical Union (IAU) formally accepted the modern list of 88 constellations, and in 1928 adopted official constellation boundaries that together cover the entire celestial sphere. Any given point in a celestial coordinate system lies in one of the modern constellations. Some astronomical naming systems include the constellation where a given celestial object is found to convey its approximate location in the sky. The Flamsteed designation of a star, for example, consists of a number and the genitive form of the constellation's name. + +Other star patterns or groups called asterisms are not constellations under the formal definition, but are also used by observers to navigate the night sky. Asterisms may be several stars within a constellation, or they may share stars with more than one constellation. Examples of asterisms include the teapot within the constellation Sagittarius, or the big dipper in the constellation of Ursa Major. + +Terminology + +The word constellation comes from the Late Latin term , which can be translated as "set of stars"; it came into use in Middle English during the 14th century. The Ancient Greek word for constellation is ἄστρον (astron). These terms historically referred to any recognisable pattern of stars whose appearance was associated with mythological characters or creatures, earthbound animals, or objects. Over time, among European astronomers, the constellations became clearly defined and widely recognised. Today, there are 88 IAU designated constellations. + +A constellation or star that never sets below the horizon when viewed from a particular latitude on Earth is termed circumpolar. From the North Pole or South Pole, all constellations south or north of the celestial equator are circumpolar. Depending on the definition, equatorial constellations may include those that lie between declinations 45° north and 45° south, or those that pass through the declination range of the ecliptic or zodiac ranging between 23½° north, the celestial equator, and 23½° south. + +Stars in constellations can appear near each other in the sky, but they usually lie at a variety of distances away from the Earth. Since each star has its own independent motion, all constellations will change slowly over time. After tens to hundreds of thousands of years, familiar outlines will become unrecognizable. Astronomers can predict the past or future constellation outlines by measuring individual stars' common proper motions or cpm by accurate astrometry and their radial velocities by astronomical spectroscopy. + +Identification + +The 88 constellations recognized by the International Astronomical Union as well as those that cultures have recognized throughout history are imagined figures and shapes derived from the patterns of stars in the observable sky. Many officially recognized constellations are based on the imaginations of ancient, Near Eastern and Mediterranean mythologies. H.A. Rey, who wrote popular books on astronomy, pointed out the imaginative nature of the constellations and their mythological and artistic basis, and the practical use of identifying them through definite images, according to the classical names they were given. + +History of the early constellations + +Lascaux Caves, southern France +It has been suggested that the 17,000-year-old cave paintings in Lascaux, southern France, depict star constellations such as Taurus, Orion's Belt, and the Pleiades. However, this view is not generally accepted among scientists. + +Mesopotamia +Inscribed stones and clay writing tablets from Mesopotamia (in modern Iraq) dating to 3000 BC provide the earliest generally accepted evidence for humankind's identification of constellations. It seems that the bulk of the Mesopotamian constellations were created within a relatively short interval from around 1300 to 1000 BC. Mesopotamian constellations appeared later in many of the classical Greek constellations. + +Ancient Near East + +The oldest Babylonian catalogues of stars and constellations date back to the beginning of the Middle Bronze Age, most notably the Three Stars Each texts and the MUL.APIN, an expanded and revised version based on more accurate observation from around 1000 BC. However, the numerous Sumerian names in these catalogues suggest that they built on older, but otherwise unattested, Sumerian traditions of the Early Bronze Age. + +The classical Zodiac is a revision of Neo-Babylonian constellations from the 6th century BC. The Greeks adopted the Babylonian constellations in the 4th century BC. Twenty Ptolemaic constellations are from the Ancient Near East. Another ten have the same stars but different names. + +Biblical scholar E. W. Bullinger interpreted some of the creatures mentioned in the books of Ezekiel and Revelation as the middle signs of the four-quarters of the Zodiac, with the Lion as Leo, the Bull as Taurus, the Man representing Aquarius, and the Eagle standing in for Scorpio. The biblical Book of Job also makes reference to a number of constellations, including "bier", "fool" and "heap" (Job 9:9, 38:31–32), rendered as "Arcturus, Orion and Pleiades" by the KJV, but ‘Ayish "the bier" actually corresponding to Ursa Major. The term Mazzaroth , translated as a garland of crowns, is a hapax legomenon in Job 38:32, and it might refer to the zodiacal constellations. + +Classical antiquity + +There is only limited information on ancient Greek constellations, with some fragmentary evidence being found in the Works and Days of the Greek poet Hesiod, who mentioned the "heavenly bodies". Greek astronomy essentially adopted the older Babylonian system in the Hellenistic era, first introduced to Greece by Eudoxus of Cnidus in the 4th century BC. The original work of Eudoxus is lost, but it survives as a versification by Aratus, dating to the 3rd century BC. The most complete existing works dealing with the mythical origins of the constellations are by the Hellenistic writer termed pseudo-Eratosthenes and an early Roman writer styled pseudo-Hyginus. The basis of Western astronomy as taught during Late Antiquity and until the Early Modern period is the Almagest by Ptolemy, written in the 2nd century. + +In the Ptolemaic Kingdom, native Egyptian tradition of anthropomorphic figures represented the planets, stars, and various constellations. Some of these were combined with Greek and Babylonian astronomical systems culminating in the Zodiac of Dendera; it remains unclear when this occurred, but most were placed during the Roman period between 2nd to 4th centuries AD. The oldest known depiction of the zodiac showing all the now familiar constellations, along with some original Egyptian constellations, decans, and planets. Ptolemy's Almagest remained the standard definition of constellations in the medieval period both in Europe and in Islamic astronomy. + +Ancient China + +Ancient China had a long tradition of observing celestial phenomena. Nonspecific Chinese star names, later categorized in the twenty-eight mansions, have been found on oracle bones from Anyang, dating back to the middle Shang dynasty. These constellations are some of the most important observations of Chinese sky, attested from the 5th century BC. Parallels to the earliest Babylonian (Sumerian) star catalogues suggest that the ancient Chinese system did not arise independently. + +Three schools of classical Chinese astronomy in the Han period are attributed to astronomers of the earlier Warring States period. The constellations of the three schools were conflated into a single system by Chen Zhuo, an astronomer of the 3rd century (Three Kingdoms period). Chen Zhuo's work has been lost, but information on his system of constellations survives in Tang period records, notably by Qutan Xida. The oldest extant Chinese star chart dates to that period and was preserved as part of the Dunhuang Manuscripts. Native Chinese astronomy flourished during the Song dynasty, and during the Yuan dynasty became increasingly influenced by medieval Islamic astronomy (see Treatise on Astrology of the Kaiyuan Era). As maps were prepared during this period on more scientific lines, they were considered as more reliable. + +A well-known map from the Song period is the Suzhou Astronomical Chart, which was prepared with carvings of stars on the planisphere of the Chinese sky on a stone plate; it is done accurately based on observations, and it shows the supernova of the year of 1054 in Taurus. + +Influenced by European astronomy during the late Ming dynasty, charts depicted more stars but retained the traditional constellations. Newly observed stars were incorporated as supplementary to old constellations in the southern sky, which did not depict the traditional stars recorded by ancient Chinese astronomers. Further improvements were made during the later part of the Ming dynasty by Xu Guangqi and Johann Adam Schall von Bell, the German Jesuit and was recorded in Chongzhen Lishu (Calendrical Treatise of Chongzhen period, 1628). Traditional Chinese star maps incorporated 23 new constellations with 125 stars of the southern hemisphere of the sky based on the knowledge of Western star charts; with this improvement, the Chinese Sky was integrated with the World astronomy. + +Ancient Greece + +A lot of well-known constellations also have histories that connect to ancient Greece. + +Early modern astronomy +Historically, the origins of the constellations of the northern and southern skies are distinctly different. Most northern constellations date to antiquity, with names based mostly on Classical Greek legends. Evidence of these constellations has survived in the form of star charts, whose oldest representation appears on the statue known as the Farnese Atlas, based perhaps on the star catalogue of the Greek astronomer Hipparchus. Southern constellations are more modern inventions, sometimes as substitutes for ancient constellations (e.g. Argo Navis). Some southern constellations had long names that were shortened to more usable forms; e.g. Musca Australis became simply Musca. + +Some of the early constellations were never universally adopted. Stars were often grouped into constellations differently by different observers, and the arbitrary constellation boundaries often led to confusion as to which constellation a celestial object belonged. Before astronomers delineated precise boundaries (starting in the 19th century), constellations generally appeared as ill-defined regions of the sky. Today they now follow officially accepted designated lines of right ascension and declination based on those defined by Benjamin Gould in epoch 1875.0 in his star catalogue Uranometria Argentina. + +The 1603 star atlas "Uranometria" of Johann Bayer assigned stars to individual constellations and formalized the division by assigning a series of Greek and Latin letters to the stars within each constellation. These are known today as Bayer designations. Subsequent star atlases led to the development of today's accepted modern constellations. + +Origin of the southern constellations + +The southern sky, below about −65° declination, was only partially catalogued by ancient Babylonians, Egyptians, Greeks, Chinese, and Persian astronomers of the north. The knowledge that northern and southern star patterns differed goes back to Classical writers, who describe, for example, the African circumnavigation expedition commissioned by Egyptian Pharaoh Necho II in c. 600 BC and those of Hanno the Navigator in c. 500 BC. + +The history of southern constellations is not straightforward. Different groupings and different names were proposed by various observers, some reflecting national traditions or designed to promote various sponsors. Southern constellations were important from the 14th to 16th centuries, when sailors used the stars for celestial navigation. Italian explorers who recorded new southern constellations include Andrea Corsali, Antonio Pigafetta, and Amerigo Vespucci. + +Many of the 88 IAU-recognized constellations in this region first appeared on celestial globes developed in the late 16th century by Petrus Plancius, based mainly on observations of the Dutch navigators Pieter Dirkszoon Keyser and Frederick de Houtman. These became widely known through Johann Bayer's star atlas Uranometria of 1603. Fourteen more were created in 1763 by the French astronomer Nicolas Louis de Lacaille, who also split the ancient constellation Argo Navis into three; these new figures appeared in his star catalogue, published in 1756. + +Several modern proposals have not survived. The French astronomers Pierre Lemonnier and Joseph Lalande, for example, proposed constellations that were once popular but have since been dropped. The northern constellation Quadrans Muralis survived into the 19th century (when its name was attached to the Quadrantid meteor shower), but is now divided between Boötes and Draco. + +88 modern constellations + +A list of 88 constellations was produced for the International Astronomical Union in 1922. It is roughly based on the traditional Greek constellations listed by Ptolemy in his Almagest in the 2nd century and Aratus' work Phenomena, with early modern modifications and additions (most importantly introducing constellations covering the parts of the southern sky unknown to Ptolemy) by Petrus Plancius (1592, 1597/98 and 1613), Johannes Hevelius (1690) and Nicolas Louis de Lacaille (1763), who introduced fourteen new constellations. Lacaille studied the stars of the southern hemisphere from 1751 until 1752 from the Cape of Good Hope, when he was said to have observed more than 10,000 stars using a refracting telescope with an aperture of . + +In 1922, Henry Norris Russell produced a list of 88 constellations with three-letter abbreviations for them. However, these constellations did not have clear borders between them. In 1928, the International Astronomical Union (IAU) formally accepted 88 modern constellations, with contiguous boundaries along vertical and horizontal lines of right ascension and declination developed by Eugene Delporte that, together, cover the entire celestial sphere; this list was finally published in 1930. Where possible, these modern constellations usually share the names of their Graeco-Roman predecessors, such as Orion, Leo or Scorpius. The aim of this system is area-mapping, i.e. the division of the celestial sphere into contiguous fields. Out of the 88 modern constellations, 36 lie predominantly in the northern sky, and the other 52 predominantly in the southern. + +The boundaries developed by Delporte used data that originated back to epoch B1875.0, which was when Benjamin A. Gould first made his proposal to designate boundaries for the celestial sphere, a suggestion on which Delporte based his work. The consequence of this early date is that because of the precession of the equinoxes, the borders on a modern star map, such as epoch J2000, are already somewhat skewed and no longer perfectly vertical or horizontal. This effect will increase over the years and centuries to come. + +Symbols +The constellations have no official symbols, though those of the ecliptic may take the signs of the zodiac. Symbols for the other modern constellations, as well as older ones that still occur in modern nomenclature, have occasionally been published. + +Dark cloud constellations + +The Great Rift, a series of dark patches in the Milky Way, is more visible and striking in the southern hemisphere than in the northern. It vividly stands out when conditions are otherwise so dark that the Milky Way's central region casts shadows on the ground. Some cultures have discerned shapes in these patches and have given names to these "dark cloud constellations". Members of the Inca civilization identified various dark areas or dark nebulae in the Milky Way as animals and associated their appearance with the seasonal rains. Australian Aboriginal astronomy also describes dark cloud constellations, the most famous being the "emu in the sky" whose head is formed by the Coalsack, a dark nebula, instead of the stars. + +List of dark cloud constellations + Great Rift (astronomy) + Emu in the sky + Cygnus Rift + Serpens–Aquila Rift + Dark Horse (astronomy) + Rho Ophiuchi cloud complex + +See also + Celestial cartography + Constellation family + Former constellations + IAU designated constellations + Lists of stars by constellation + Constellations listed by Johannes Hevelius + Constellations listed by Lacaille + Constellations listed by Petrus Plancius + Constellations listed by Ptolemy + +References + +Further reading + +Mythology, lore, history, and archaeoastronomy + Allen, Richard Hinckley. (1899) Star-Names And Their Meanings, G. E. Stechert, New York, hardcover; reprint 1963 as Star Names: Their Lore and Meaning, Dover Publications, Inc., Mineola, NY, softcover. + Olcott, William Tyler. (1911); Star Lore of All Ages, G. P. Putnam's Sons, New York, hardcover; reprint 2004 as Star Lore: Myths, Legends, and Facts, Dover Publications, Inc., Mineola, NY, softcover. + Kelley, David H. and Milone, Eugene F. (2004) Exploring Ancient Skies: An Encyclopedic Survey of Archaeoastronomy, Springer, hardcover. + Ridpath, Ian. (2018) Star Tales 2nd ed., Lutterworth Press, softcover. + Staal, Julius D. W. (1988) The New Patterns in the Sky: Myths and Legends of the Stars, McDonald & Woodward Publishing Co., hardcover, softcover. + +Atlases and celestial maps + +General and nonspecialized – entire celestial heavens + Becvar, Antonin. Atlas Coeli. Published as Atlas of the Heavens, Sky Publishing Corporation, Cambridge, MA, with coordinate grid transparency overlay. + Norton, Arthur Philip. (1910) Norton's Star Atlas, 20th Edition 2003 as Norton's Star Atlas and Reference Handbook, edited by Ridpath, Ian, Pi Press, , hardcover. + National Geographic Society. (1957, 1970, 2001, 2007) The Heavens (1970), Cartographic Division of the National Geographic Society (NGS), Washington, DC, two-sided large map chart depicting the constellations of the heavens; as a special supplement to the August 1970 issue of National Geographic. Forerunner map as A Map of The Heavens, as a special supplement to the December 1957 issue. Current version 2001 (Tirion), with 2007 reprint. + Sinnott, Roger W. and Perryman, Michael A.C. (1997) Millennium Star Atlas, Epoch 2000.0, Sky Publishing Corporation, Cambridge, MA, and European Space Agency (ESA), ESTEC, Noordwijk, The Netherlands. Subtitle: "An All-Sky Atlas Comprising One Million Stars to Visual Magnitude Eleven from the Hipparcos and Tycho Catalogues and Ten Thousand Nonstellar Objects". 3 volumes, hardcover, . Vol. 1, 0–8 Hours (Right Ascension), hardcover; Vol. 2, 8–16 Hours, hardcover; Vol. 3, 16–24 Hours, hardcover. Softcover version available. Supplemental separate purchasable coordinate grid transparent overlays. + Tirion, Wil; et al. (1987) Uranometria 2000.0, Willmann-Bell, Inc., Richmond, VA, 3 volumes, hardcover. Vol. 1 (1987): "The Northern Hemisphere to −6°", by Wil Tirion, Barry Rappaport, and George Lovi, hardcover, printed boards. Vol. 2 (1988): "The Southern Hemisphere to +6°", by Wil Tirion, Barry Rappaport and George Lovi, hardcover, printed boards. Vol. 3 (1993) as a separate added work: The Deep Sky Field Guide to Uranometria 2000.0, by Murray Cragin, James Lucyk, and Barry Rappaport, hardcover, printed boards. 2nd Edition 2001 as collective set of 3 volumes – Vol. 1: Uranometria 2000.0 Deep Sky Atlas, by Wil Tirion, Barry Rappaport, and Will Remaklus, hardcover, printed boards; Vol. 2: Uranometria 2000.0 Deep Sky Atlas, by Wil Tirion, Barry Rappaport, and Will Remaklus, hardcover, printed boards; Vol. 3: Uranometria 2000.0 Deep Sky Field Guide by Murray Cragin and Emil Bonanno, , hardcover, printed boards. + Tirion, Wil and Sinnott, Roger W. (1998) Sky Atlas 2000.0, various editions. 2nd Deluxe Edition, Cambridge University Press, Cambridge, England. + +Northern celestial hemisphere and north circumpolar region + Becvar, Antonin. (1962) Atlas Borealis 1950.0, Czechoslovak Academy of Sciences (Ceskoslovenske Akademie Ved), Praha, Czechoslovakia, 1st Edition, elephant folio hardcover, with small transparency overlay coordinate grid square and separate paper magnitude legend ruler. 2nd Edition 1972 and 1978 reprint, Czechoslovak Academy of Sciences (Ceskoslovenske Akademie Ved), Prague, Czechoslovakia, and Sky Publishing Corporation, Cambridge, MA, oversize folio softcover spiral-bound, with transparency overlay coordinate grid ruler. + +Equatorial, ecliptic, and zodiacal celestial sky + Becvar, Antonin. (1958) Atlas Eclipticalis 1950.0, Czechoslovak Academy of Sciences (Ceskoslovenske Akademie Ved), Praha, Czechoslovakia, 1st Edition, elephant folio hardcover, with small transparency overlay coordinate grid square and separate paper magnitude legend ruler. 2nd Edition 1974, Czechoslovak Academy of Sciences (Ceskoslovenske Akademie Ved), Prague, Czechoslovakia, and Sky Publishing Corporation, Cambridge, MA, oversize folio softcover spiral-bound, with transparency overlay coordinate grid ruler. + +Southern celestial hemisphere and south circumpolar region + Becvar, Antonin. Atlas Australis 1950.0, Czechoslovak Academy of Sciences (Ceskoslovenske Akademie Ved), Praha, Czechoslovakia, 1st Edition, hardcover, with small transparency overlay coordinate grid square and separate paper magnitude legend ruler. 2nd Edition, Czechoslovak Academy of Sciences (Ceskoslovenske Akademie Ved), Prague, Czechoslovakia, and Sky Publishing Corporation, Cambridge, MA, oversize folio softcover spiral-bound, with transparency overlay coordinate grid ruler. + +Catalogs + Becvar, Antonin. (1959) Atlas Coeli II Katalog 1950.0, Praha, 1960 Prague. Published 1964 as Atlas of the Heavens – II Catalogue 1950.0, Sky Publishing Corporation, Cambridge, MA + Hirshfeld, Alan and Sinnott, Roger W. (1982) Sky Catalogue 2000.0, Cambridge University Press and Sky Publishing Corporation, 1st Edition, 2 volumes. both vols., and vol. 1. "Volume 1: Stars to Magnitude 8.0", (Cambridge) and hardcover, softcover. Vol. 2 (1985) – "Volume 2: Double Stars, Variable Stars, and Nonstellar Objects", (Cambridge) hardcover, (Cambridge) softcover. 2nd Edition (1991) with additional third author François Ochsenbein, 2 volumes, . Vol. 1: (Cambridge) hardcover; (Cambridge) softcover . Vol. 2 (1999): (Cambridge) softcover and 0-933346-38-7 softcover – reprint of 1985 edition. + Yale University Observatory. (1908, et al.) Catalogue of Bright Stars, New Haven, CN. Referred to commonly as "Bright Star Catalogue". Various editions with various authors historically, the longest term revising author as (Ellen) Dorrit Hoffleit. 1st Edition 1908. 2nd Edition 1940 by Frank Schlesinger and Louise F. Jenkins. 3rd Edition (1964), 4th Edition, 5th Edition (1991), and 6th Edition (pending posthumous) by Hoffleit. + +External links + + IAU: The Constellations, including high quality maps. + Atlascoelestis, di Felice Stoppa. + Celestia free 3D realtime space-simulation (OpenGL) + Stellarium realtime sky rendering program (OpenGL) + Strasbourg Astronomical Data Center Files on official IAU constellation boundaries + Studies of Occidental Constellations and Star Names to the Classical Period: An Annotated Bibliography + Table of Constellations + Online Text: Hyginus, Astronomica translated by Mary Grant Greco-Roman constellation myths + Neave Planetarium Adobe Flash interactive web browser planetarium and stardome with realistic movement of stars and the planets. + Audio – Cain/Gay (2009) Astronomy Cast Constellations + The Greek Star-Map short essay by Gavin White + Bucur D. The network signature of constellation line figures. PLOS ONE 17(7): e0272270 (2022). A comparative analysis on the structure of constellation line figures across 56 sky cultures. + + +Constellations +Celestial cartography +Constellations +Concepts in astronomy +Character or Characters may refer to: + +Arts, entertainment, and media + +Literature + Character (novel), a 1936 Dutch novel by Ferdinand Bordewijk + Characters (Theophrastus), a classical Greek set of character sketches attributed to Theophrastus + +Music + Characters (John Abercrombie album), 1977 + Character (Dark Tranquillity album), 2005 + Character (Julia Kent album), 2013 + Character (Rachael Sage album), 2020 + Characters (Stevie Wonder album), 1987 + +Types of entity + Character (arts), an agent within a work of art, including literature, drama, cinema, opera, etc. + Character sketch or character, a literary description of a character type + Game character (disambiguation), various types of characters in a video game or role playing game + Player character, as above but who is controlled or whose actions are directly chosen by a player + Non-player character, as above but not player-controlled, frequently abbreviated as NPC + +Other uses in arts, entertainment, and media + Character (film), a 1997 Dutch film based on Bordewijk's novel + Charaktery, a monthly magazine in Poland + Netflix Presents: The Characters, an improvised sketch comedy show on Netflix + +Mathematics + Character (mathematics), a homomorphism from a group to a field + Characterization (mathematics), the logical equivalency between objects of two different domains. + Character theory, the mathematical theory of special kinds of characters associated to group representations + Dirichlet character, a type of character in number theory + Multiplicative character, a homomorphism from a group to the multiplicative subgroup of a field + +Morality and social science + Character education, a US term for values education + Character structure, a person's traits + Moral character, an evaluation of a particular individual's durable moral qualities + +Symbols + Character (symbol), a sign or symbol + Character (computing), a unit of information roughly corresponding to a grapheme + +Other uses + Character (biology), the abstraction of an observable physical or biochemical trait of an organism + Character (income tax), a type of income for tax purposes in the US + Sacramental character, a Catholic teaching + Neighbourhood character, the look and feel of a built environment + +See also + (character) (disambiguation) + Virtual character (disambiguation) +A car is a wheeled motor vehicle used for transporting passengers. + +Car(s), CAR(s), or The Car(s) may also refer to: + +Computing + C.a.R. (Z.u.L.), geometry software + CAR and CDR, commands in LISP computer programming + Clock with Adaptive Replacement, a page replacement algorithm + Computer-assisted reporting + Computer-assisted reviewing + +Economics + Capital adequacy ratio, a ratio of a bank's capital to its risk + Cost accrual ratio, an accounting formula + Cumulative abnormal return + Cumulative average return, a financial concept related to the time value of money + +Film and television + Cars (franchise), a Disney/Pixar film series + Cars (film), a 2006 computer-animated film from Disney and Pixar + The Car (1977 film), an American horror film + Car, a BBC Two television ident first aired in 1993 (see BBC Two '1991–2001' idents) + The Car (1997 film), a Malayalam film + "The Car" (The Assistants episode) + +Literature + Car (magazine), a British auto-enthusiast publication + The Car (novel), a novel by Gary Paulsen + +Military + Canadian Airborne Regiment, a Canadian Forces formation + Colt Automatic Rifle, a 5.56mm NATO firearm + Combat Action Ribbon, a United States military decoration + U.S. Army Combat Arms Regimental System, a 1950s reorganisation of the regiments of the US Army + Conflict Armament Research, a UK-based investigative organization that tracks the supply of armaments into conflict-affected areas + +Music + The Cars, an American band + +Albums + Peter Gabriel (1977 album) or Car + The Cars (album), a 1978 album by The Cars + Cars (soundtrack), the soundtrack to the 2006 film + Cars (Now, Now Every Children album), 2009 + Cars, a 2011 album by Kris Delmhorst + C.A.R. (album), a 2012 album by Serengeti + The Car (album), a 2022 album by Arctic Monkeys + +Songs + "The Car" (song), a song by Jeff Carson + "Cars" (song), a 1979 single by Gary Numan + "Car", a 1994 song by Built to Spill from There's Nothing Wrong with Love + +Paintings + Cars (painting), a series of paintings by Andy Warhol + The Car (Brack), a 1955 painting by John Brack + +People + Car (surname) + Cars (surname) + +Places + Car, Azerbaijan, a village + Čar, a village in Serbia + Cars, Gironde, France, a commune + Les Cars, Haute-Vienne, France, a commune + Central African Republic + Central Asian Republics + Cordillera Administrative Region, Philippines + County Carlow, Ireland, Chapman code + +Science + Canonical anticommutation relation + Carina (constellation) + Chimeric antigen receptor, artificial T cell receptors + Coherent anti-Stokes Raman spectroscopy + Constitutive androstane receptor + Cortisol awakening response, on waking from sleep + Coxsackievirus and adenovirus receptor, a protein + +Sports + Carolina Hurricanes, a National Hockey League team + Carolina Panthers, a National Football League team + Club Always Ready, a Bolivian football club from La Paz + Rugby Africa, formerly known as Confederation of African Rugby + +Transportation + Railroad car + Canada Atlantic Railway, 1879–1914 + Canadian Atlantic Railway, 1986–1994 + Carlisle railway station's station code + Car, the cab of an elevator + Car, a tram, streetcar, or trolley car + +Other uses + +Car + Car (Greek myth), one or two figures in Greek mythology + Car language, an Austroasiatic language of the Nicobar Islands in the eastern Indian Ocean + car, ISO 639-2 and ISO 639-3 codes of the Carib language, spoken by the Kalina people of South America + Cars (video game), a 2006 video game based on the film + Chimeric antigen receptor, a type of protein engineered to give T cells the ability to target a specific protein + +CAR + Canadian Aviation Regulations + Avis Budget Group (Nasdaq: CAR) + Central apparatus room, an equipment room found at broadcasting facilities + Children of the American Revolution, a genealogical society + or Action Committee for Renewal, a political party of Togo + Council for Aboriginal Reconciliation, body founded by the Australian Government in 1991 as part of its Reconciliation in Australia policy + Council for Aboriginal Rights (1951–1980s), Victoria, Australia + Criminal Appeal Reports, law reports in the United Kingdom + +See also + + Carr (disambiguation) + CARS (disambiguation) + Le Car (disambiguation) + iCar +In computing, a printer is a peripheral machine which makes a persistent representation of graphics or text, usually on paper. While most output is human-readable, bar code printers are an example of an expanded use for printers. Different types of printers include 3D printers, inkjet printers, laser printers, and thermal printers. + +History +The first computer printer designed was a mechanically driven apparatus by Charles Babbage for his difference engine in the 19th century; however, his mechanical printer design was not built until 2000. + +The first patented printing mechanism for applying a marking medium to a recording medium or more particularly an electrostatic inking apparatus and a method for electrostatically depositing ink on controlled areas of a receiving medium, was in 1962 by C. R. Winston, Teletype Corporation, using continuous inkjet printing. The ink was a red stamp-pad ink manufactured by Phillips Process Company of Rochester, NY under the name Clear Print. This patent (US3060429) led to the Teletype Inktronic Printer product delivered to customers in late 1966. + +The first compact, lightweight digital printer was the EP-101, invented by Japanese company Epson and released in 1968, according to Epson. + +The first commercial printers generally used mechanisms from electric typewriters and Teletype machines. The demand for higher speed led to the development of new systems specifically for computer use. In the 1980s there were daisy wheel systems similar to typewriters, line printers that produced similar output but at much higher speed, and dot-matrix systems that could mix text and graphics but produced relatively low-quality output. The plotter was used for those requiring high-quality line art like blueprints. + +The introduction of the low-cost laser printer in 1984, with the first HP LaserJet, and the addition of PostScript in next year's Apple LaserWriter set off a revolution in printing known as desktop publishing. Laser printers using PostScript mixed text and graphics, like dot-matrix printers, but at quality levels formerly available only from commercial typesetting systems. By 1990, most simple printing tasks like fliers and brochures were now created on personal computers and then laser printed; expensive offset printing systems were being dumped as scrap. The HP Deskjet of 1988 offered the same advantages as a laser printer in terms of flexibility, but produced somewhat lower-quality output (depending on the paper) from much less-expensive mechanisms. Inkjet systems rapidly displaced dot-matrix and daisy-wheel printers from the market. By the 2000s, high-quality printers of this sort had fallen under the $100 price point and became commonplace. + +The rapid improvement of internet email through the 1990s and into the 2000s has largely displaced the need for printing as a means of moving documents, and a wide variety of reliable storage systems means that a "physical backup" is of little benefit today. + +Starting around 2010, 3D printing became an area of intense interest, allowing the creation of physical objects with the same sort of effort as an early laser printer required to produce a brochure. As of the 2020s, 3D printing has become a widespread hobby due to the abundance of cheap 3D printer kits, with the most common process being Fused deposition modeling. + +Types +Personal printers are mainly designed to support individual users, and may be connected to only a single computer. These printers are designed for low-volume, short-turnaround print jobs, requiring minimal setup time to produce a hard copy of a given document. However, they are generally slow devices ranging from 6 to around 25 pages per minute (ppm), and the cost per page is relatively high. However, this is offset by the on-demand convenience. Some printers can print documents stored on memory cards or from digital cameras and scanners. + +Networked or shared printers are "designed for high-volume, high-speed printing". They are usually shared by many users on a network and can print at speeds of 45 to around 100 ppm. The Xerox 9700 could achieve 120 ppm. +An ID Card printer is used for printing plastic ID cards. These can now be customised with important features such as holographic overlays, HoloKotes and watermarks. This is either a direct to card printer (the more feasible option, or a retransfer printer. +A virtual printer is a piece of computer software whose user interface and API resembles that of a printer driver, but which is not connected with a physical computer printer. A virtual printer can be used to create a file which is an image of the data which would be printed, for archival purposes or as input to another program, for example to create a PDF or to transmit to another system or user. + +A barcode printer is a computer peripheral for printing barcode labels or tags that can be attached to, or printed directly on, physical objects. Barcode printers are commonly used to label cartons before shipment, or to label retail items with UPCs or EANs. + +A 3D printer is a device for making a three-dimensional object from a 3D model or other electronic data source through additive processes in which successive layers of material (including plastics, metals, food, cement, wood, and other materials) are laid down under computer control. It is called a printer by analogy with an inkjet printer which produces a two-dimensional document by a similar process of depositing a layer of ink on paper. + +ID Card printers +A card printer is an electronic desktop printer with single card feeders which print and personalize plastic cards. In this respect they differ from, for example, label printers which have a continuous supply feed. Card dimensions are usually 85.60 × 53.98 mm, standardized under ISO/IEC 7810 as ID-1. This format is also used in EC-cards, telephone cards, credit cards, driver's licenses and health insurance cards. This is commonly known as the bank card format. Card printers are controlled by corresponding printer drivers or by means of a specific programming language. Generally card printers are designed with laminating, striping, and punching functions, and use desktop or web-based software. The hardware features of a card printer differentiate a card printer from the more traditional printers, as ID cards are usually made of PVC plastic and require laminating and punching. Different card printers can accept different card thickness and dimensions. + +The principle is the same for practically all card printers: the plastic card is passed through a thermal print head at the same time as a color ribbon. The color from the ribbon is transferred onto the card through the heat given out from the print head. The standard performance for card printing is 300 dpi (300 dots per inch, equivalent to 11.8 dots per mm). There are different printing processes, which vary in their detail: + Thermal transfer Mainly used to personalize pre-printed plastic cards in monochrome. The color is "transferred" from the (monochrome) color ribbon onto the card. + Dye sublimation This process uses four panels of color according to the CMYK color ribbon. The card to be printed passes under the print head several times each time with the corresponding ribbon panel. Each color in turn is diffused (sublimated) directly onto the card. Thus it is possible to produce a high depth of color (up to 16 million shades) on the card. Afterwards a transparent overlay (O) also known as a topcoat (T) is placed over the card to protect it from mechanical wear and tear and to render the printed image UV resistant. + Reverse image technology The standard for high-security card applications that use contact and contactless smart chip cards. The technology prints images onto the underside of a special film that fuses to the surface of a card through heat and pressure. Since this process transfers dyes and resins directly onto a smooth, flexible film, the print-head never comes in contact with the card surface itself. As such, card surface interruptions such as smart chips, ridges caused by internal RFID antennae and debris do not affect print quality. Even printing over the edge is possible. + Thermal rewrite print process In contrast to the majority of other card printers, in the thermal rewrite process the card is not personalized through the use of a color ribbon, but by activating a thermal sensitive foil within the card itself. These cards can be repeatedly personalized, erased and rewritten. The most frequent use of these are in chip-based student identity cards, whose validity changes every semester. + + Common printing problems: Many printing problems are caused by physical defects in the card material itself, such as deformation or warping of the card that is fed into the machine in the first place. Printing irregularities can also result from chip or antenna embedding that alters the thickness of the plastic and interferes with the printer's effectiveness. Other issues are often caused by operator errors, such as users attempting to feed non-compatible cards into the card printer, while other printing defects may result from environmental abnormalities such as dirt or contaminants on the card or in the printer. Reverse transfer printers are less vulnerable to common printing problems than direct-to-card printers, since with these printers the card does not come into direct contact with the printhead. + + Variations in card printers: + Broadly speaking there are three main types of card printers, differing mainly by the method used to print onto the card. They are: + Near to Edge. This term designates the cheapest type of printing by card printers. These printers print up to 5 mm from the edge of the card stock. + Direct to Card, also known as "Edge to Edge Printing". The print-head comes in direct contact with the card. This printing type is the most popular nowadays, mostly due to cost factor. The majority of identification card printers today are of this type. + Reverse Transfer, also known as "High Definition Printing" or "Over the Edge Printing". The print-head prints to a transfer film backwards (hence the reverse) and then the printed film is rolled onto the card with intense heat (hence the transfer). The term "over the edge" is due to the fact that when the printer prints onto the film it has a "bleed", and when rolled onto the card the bleed extends to completely over the edge of the card, leaving no border. + + Different ID Card Printers use different encoding techniques to facilitate disparate business environments and to support security initiatives. Known encoding techniques are: + Contact Smart Card – The Contact Smart Cards use RFID technology and require direct contact to a conductive plate to register admission or transfer of information. The transmission of commands, data, and card status held between the two physical contact points. + Contactless Smart Card – Contactless Smart Cards exhibit integrated circuit that can store and process data while communicating with the terminal via Radio Frequency. Unlike Contact Smart Card, contact less cards feature intelligent re-writable microchip that can be transcribed through radio waves. + HiD Proximity – HID's proximity technology allows fast, accurate reading while offering card or key tag read ranges from 4” to 24” inches (10 cm to 60.96 cm), dependent on the type of proximity reader being used. Since these cards and key tags do not require physical contact with the reader, they are virtually maintenance and wear-free. + ISO Magnetic Stripe - A magnetic stripe card is a type of card capable of storing data by modifying the magnetism of tiny iron-based magnetic particles on a band of magnetic material on the card. The magnetic stripe, sometimes called swipe card or magstripe, is read by physical contact and swiping past a magnetic reading head. + +Software +There are basically two categories of card printer software: desktop-based, and web-based (online). The biggest difference between the two is whether or not a customer has a printer on their network that is capable of printing identification cards. If a business already owns an ID card printer, then a desktop-based badge maker is probably suitable for their needs. Typically, large organizations who have high employee turnover will have their own printer. A desktop-based badge maker is also required if a company needs their IDs make instantly. An example of this is the private construction site that has restricted access. However, if a company does not already have a local (or network) printer that has the features they need, then the web-based option is a perhaps a more affordable solution. The web-based solution is good for small businesses that do not anticipate a lot of rapid growth, or organizations who either can not afford a card printer, or do not have the resources to learn how to set up and use one. Generally speaking, desktop-based solutions involve software, a database (or spreadsheet) and can be installed on a single computer or network. + +Other options +Alongside the basic function of printing cards, card printers can also read and encode magnetic stripes as well as contact and contact free RFID chip cards (smart cards). Thus card printers enable the encoding of plastic cards both visually and logically. Plastic cards can also be laminated after printing. Plastic cards are laminated after printing to achieve a considerable increase in durability and a greater degree of counterfeit prevention. Some card printers come with an option to print both sides at the same time, which cuts down the time taken to print and less margin of error. In such printers one side of id card is printed and then the card is flipped in the flip station and other side is printed. + +Applications +Alongside the traditional uses in time attendance and access control (in particular with photo personalization), countless other applications have been found for plastic cards, e.g. for personalized customer and members' cards, for sports ticketing and in local public transport systems for the production of season tickets, for the production of school and college identity cards as well as for the production of national ID cards. + +Technology +The choice of print technology has a great effect on the cost of the printer and cost of operation, speed, quality and permanence of documents, and noise. Some printer technologies do not work with certain types of physical media, such as carbon paper or transparencies. + +A second aspect of printer technology that is often forgotten is resistance to alteration: liquid ink, such as from an inkjet head or fabric ribbon, becomes absorbed by the paper fibers, so documents printed with liquid ink are more difficult to alter than documents printed with toner or solid inks, which do not penetrate below the paper surface. + +Cheques can be printed with liquid ink or on special cheque paper with toner anchorage so that alterations may be detected. The machine-readable lower portion of a cheque must be printed using MICR toner or ink. Banks and other clearing houses employ automation equipment that relies on the magnetic flux from these specially printed characters to function properly. + +Modern print technology + +The following printing technologies are routinely found in modern printers: + +Toner-based printers + +A laser printer rapidly produces high quality text and graphics. As with digital photocopiers and multifunction printers (MFPs), laser printers employ a xerographic printing process but differ from analog photocopiers in that the image is produced by the direct scanning of a laser beam across the printer's photoreceptor. + +Another toner-based printer is the LED printer which uses an array of LEDs instead of a laser to cause toner adhesion to the print drum. + +Liquid inkjet printers + +Inkjet printers operate by propelling variably sized droplets of liquid ink onto almost any sized page. They are the most common type of computer printer used by consumers. + +Solid ink printers + +Solid ink printers, also known as phase-change ink or hot-melt ink printers, are a type of thermal transfer printer, graphics sheet printer or 3D printer . They use solid sticks, crayons, pearls or granular ink materials. Common inks are CMYK-colored ink, similar in consistency to candle wax, which are melted and fed into a piezo crystal operated print-head. A Thermal transfer printhead jets the liquid ink on a rotating, oil coated drum. The paper then passes over the print drum, at which time the image is immediately transferred, or transfixed, to the page. Solid ink printers are most commonly used as color office printers and are excellent at printing on transparencies and other non-porous media. Solid ink is also called phase-change or hot-melt ink was first used by Data Products and Howtek, Inc., in 1984. Solid ink printers can produce excellent results with text and images. Some solid ink printers have evolved to print 3D models, for example, Visual Impact Corporation of Windham, NH was started by retired Howtek employee, Richard Helinski whose 3D patents US4721635 and then US5136515 was licensed to Sanders Prototype, Inc., later named Solidscape, Inc. Acquisition and operating costs are similar to laser printers. Drawbacks of the technology include high energy consumption and long warm-up times from a cold state. Also, some users complain that the resulting prints are difficult to write on, as the wax tends to repel inks from pens, and are difficult to feed through automatic document feeders, but these traits have been significantly reduced in later models. This type of thermal transfer printer is only available from one manufacturer, Xerox, manufactured as part of their Xerox Phaser office printer line. Previously, solid ink printers were manufactured by Tektronix, but Tektronix sold the printing business to Xerox in 2001. + +Dye-sublimation printers + +A dye-sublimation printer (or dye-sub printer) is a printer that employs a printing process that uses heat to transfer dye to a medium such as a plastic card, paper, or canvas. The process is usually to lay one color at a time using a ribbon that has color panels. Dye-sub printers are intended primarily for high-quality color applications, including color photography; and are less well-suited for text. While once the province of high-end print shops, dye-sublimation printers are now increasingly used as dedicated consumer photo printers. + +Thermal printers + +Thermal printers work by selectively heating regions of special heat-sensitive paper. Monochrome thermal printers are used in cash registers, ATMs, gasoline dispensers and some older inexpensive fax machines. Colors can be achieved with special papers and different temperatures and heating rates for different colors; these colored sheets are not required in black-and-white output. One example is Zink (a portmanteau of "zero ink"). + +Obsolete and special-purpose printing technologies + +The following technologies are either obsolete, or limited to special applications though most were, at one time, in widespread use. + +Impact printers + Impact printers rely on a forcible impact to transfer ink to the media. The impact printer uses a print head that either hits the surface of the ink ribbon, pressing the ink ribbon against the paper (similar to the action of a typewriter), or, less commonly, hits the back of the paper, pressing the paper against the ink ribbon (the IBM 1403 for example). All but the dot matrix printer rely on the use of fully formed characters, letterforms that represent each of the characters that the printer was capable of printing. In addition, most of these printers were limited to monochrome, or sometimes two-color, printing in a single typeface at one time, although bolding and underlining of text could be done by "overstriking", that is, printing two or more impressions either in the same character position or slightly offset. Impact printers varieties include typewriter-derived printers, teletypewriter-derived printers, daisywheel printers, dot matrix printers, and line printers. Dot-matrix printers remain in common use in businesses where multi-part forms are printed. An overview of impact printing contains a detailed description of many of the technologies used. + +Typewriter-derived printers + +Several different computer printers were simply computer-controllable versions of existing electric typewriters. The Friden Flexowriter and IBM Selectric-based printers were the most-common examples. The Flexowriter printed with a conventional typebar mechanism while the Selectric used IBM's well-known "golf ball" printing mechanism. In either case, the letter form then struck a ribbon which was pressed against the paper, printing one character at a time. The maximum speed of the Selectric printer (the faster of the two) was 15.5 characters per second. + +Teletypewriter-derived printers + +The common teleprinter could easily be interfaced with the computer and became very popular except for those computers manufactured by IBM. Some models used a "typebox" that was positioned, in the X- and Y-axes, by a mechanism, and the selected letter form was struck by a hammer. Others used a type cylinder in a similar way as the Selectric typewriters used their type ball. In either case, the letter form then struck a ribbon to print the letterform. Most teleprinters operated at ten characters per second although a few achieved 15 CPS. + +Daisy wheel printers + +Daisy wheel printers operate in much the same fashion as a typewriter. A hammer strikes a wheel with petals, the "daisy wheel", each petal containing a letter form at its tip. The letter form strikes a ribbon of ink, depositing the ink on the page and thus printing a character. By rotating the daisy wheel, different characters are selected for printing. These printers were also referred to as letter-quality printers because they could produce text which was as clear and crisp as a typewriter. The fastest letter-quality printers printed at 30 characters per second. + +Dot-matrix printers + +The term dot matrix printer is used for impact printers that use a matrix of small pins to transfer ink to the page. The advantage of dot matrix over other impact printers is that they can produce graphical images in addition to text; however the text is generally of poorer quality than impact printers that use letterforms (type). + +Dot-matrix printers can be broadly divided into two major classes: + Ballistic wire printers + Stored energy printers + +Dot matrix printers can either be character-based or line-based (that is, a single horizontal series of pixels across the page), referring to the configuration of the print head. + +In the 1970s and '80s, dot matrix printers were one of the more common types of printers used for general use, such as for home and small office use. Such printers normally had either 9 or 24 pins on the print head (early 7 pin printers also existed, which did not print descenders). There was a period during the early home computer era when a range of printers were manufactured under many brands such as the Commodore VIC-1525 using the Seikosha Uni-Hammer system. This used a single solenoid with an oblique striker that would be actuated 7 times for each column of 7 vertical pixels while the head was moving at a constant speed. The angle of the striker would align the dots vertically even though the head had moved one dot spacing in the time. The vertical dot position was controlled by a synchronized longitudinally ribbed platen behind the paper that rotated rapidly with a rib moving vertically seven dot spacings in the time it took to print one pixel column. 24-pin print heads were able to print at a higher quality and started to offer additional type styles and were marketed as Near Letter Quality by some vendors. Once the price of inkjet printers dropped to the point where they were competitive with dot matrix printers, dot matrix printers began to fall out of favour for general use. + +Some dot matrix printers, such as the NEC P6300, can be upgraded to print in color. This is achieved through the use of a four-color ribbon mounted on a mechanism (provided in an upgrade kit that replaces the standard black ribbon mechanism after installation) that raises and lowers the ribbons as needed. Color graphics are generally printed in four passes at standard resolution, thus slowing down printing considerably. As a result, color graphics can take up to four times longer to print than standard monochrome graphics, or up to 8-16 times as long at high resolution mode. + +Dot matrix printers are still commonly used in low-cost, low-quality applications such as cash registers, or in demanding, very high volume applications like invoice printing. Impact printing, unlike laser printing, allows the pressure of the print head to be applied to a stack of two or more forms to print multi-part documents such as sales invoices and credit card receipts using continuous stationery with carbonless copy paper. It also has security advantages as ink impressed into a paper matrix by force is harder to erase invisibly. Dot-matrix printers were being superseded even as receipt printers after the end of the twentieth century. + +Line printers + +Line printers print an entire line of text at a time. Four principal designs exist. + + Drum printers, where a horizontally mounted rotating drum carries the entire character set of the printer repeated in each printable character position. The IBM 1132 printer is an example of a drum printer. Drum printers are also found in adding machines and other numeric printers (POS), the dimensions are compact as only a dozen characters need to be supported. + +Chain or train printers, where the character set is arranged multiple times around a linked chain or a set of character slugs in a track traveling horizontally past the print line. The IBM 1403 is perhaps the most popular and comes in both chain and train varieties. The band printer is a later variant where the characters are embossed on a flexible steel band. The LP27 from Digital Equipment Corporation is a band printer. +Bar printers, where the character set is attached to a solid bar that moves horizontally along the print line, such as the IBM 1443. +A fourth design, used mainly on very early printers such as the IBM 402, features independent type bars, one for each printable position. Each bar contains the character set to be printed. The bars move vertically to position the character to be printed in front of the print hammer. + +In each case, to print a line, precisely timed hammers strike against the back of the paper at the exact moment that the correct character to be printed is passing in front of the paper. The paper presses forward against a ribbon which then presses against the character form and the impression of the character form is printed onto the paper. Each system could have slight timing issues, which could cause minor misalignment of the resulting printed characters. For drum or typebar printers, this appeared as vertical misalignment, with characters being printed slightly above or below the rest of the line. In chain or bar printers, the misalignment was horizontal, with printed characters being crowded closer together or farther apart. This was much less noticeable to human vision than vertical misalignment, where characters seemed to bounce up and down in the line, so they were considered as higher quality print. + +Comb printers, also called line matrix printers, represent the fifth major design. These printers are a hybrid of dot matrix printing and line printing. In these printers, a comb of hammers prints a portion of a row of pixels at one time, such as every eighth pixel. By shifting the comb back and forth slightly, the entire pixel row can be printed, continuing the example, in just eight cycles. The paper then advances, and the next pixel row is printed. Because far less motion is involved than in a conventional dot matrix printer, these printers are very fast compared to dot matrix printers and are competitive in speed with formed-character line printers while also being able to print dot matrix graphics. The Printronix P7000 series of line matrix printers are still manufactured as of 2013. + +Line printers are the fastest of all impact printers and are used for bulk printing in large computer centres. A line printer can print at 1100 lines per minute or faster, frequently printing pages more rapidly than many current laser printers. On the other hand, the mechanical components of line printers operate with tight tolerances and require regular preventive maintenance (PM) to produce a top quality print. They are virtually never used with personal computers and have now been replaced by high-speed laser printers. The legacy of line printers lives on in many operating systems, which use the abbreviations "lp", "lpr", or "LPT" to refer to printers. + +Liquid ink electrostatic printers +Liquid ink electrostatic printers use a chemical coated paper, which is charged by the print head according to the image of the document. The paper is passed near a pool of liquid ink with the opposite charge. The charged areas of the paper attract the ink and thus form the image. This process was developed from the process of electrostatic copying. Color reproduction is very accurate, and because there is no heating the scale distortion is less than ±0.1%. (All laser printers have an accuracy of ±1%.) + +Worldwide, most survey offices used this printer before color inkjet plotters become popular. Liquid ink electrostatic printers were mostly available in width and also 6 color printing. These were also used to print large billboards. It was first introduced by Versatec, which was later bought by Xerox. 3M also used to make these printers. + +Plotters + +Pen-based plotters were an alternate printing technology once common in engineering and architectural firms. Pen-based plotters rely on contact with the paper (but not impact, per se) and special purpose pens that are mechanically run over the paper to create text and images. Since the pens output continuous lines, they were able to produce technical drawings of higher resolution than was achievable with dot-matrix technology. Some plotters used roll-fed paper, and therefore had a minimal restriction on the size of the output in one dimension. These plotters were capable of producing quite sizable drawings. + +Other printers + +A number of other sorts of printers are important for historical reasons, or for special purpose uses. + + Digital minilab (photographic paper) + Electrolytic printers + Spark printer + Barcode printer multiple technologies, including: thermal printing, inkjet printing, and laser printing barcodes + Billboard / sign paint spray printers + Laser etching (product packaging) industrial printers + Microsphere (special paper) + +Attributes + +Connectivity + +Printers can be connected to computers in many ways: directly by a dedicated data cable such as the USB, through a short-range radio like Bluetooth, a local area network using cables (such as the Ethernet) or radio (such as WiFi), or on a standalone basis without a computer, using a memory card or other portable data storage device. + +Printer control languages +Most printers other than line printers accept control characters or unique character sequences to control various printer functions. These may range from shifting from lower to upper case or from black to red ribbon on typewriter printers to switching fonts and changing character sizes and colors on raster printers. Early printer controls were not standardized, with each manufacturer's equipment having its own set. The IBM Personal Printer Data Stream (PPDS) became a commonly used command set for dot-matrix printers. + +Today, most printers accept one or more page description languages (PDLs). Laser printers with greater processing power frequently offer support for variants of Hewlett-Packard's Printer Command Language (PCL), PostScript or XML Paper Specification. Most inkjet devices support manufacturer proprietary PDLs such as ESC/P. The diversity in mobile platforms have led to various standardization efforts around device PDLs such as the Printer Working Group (PWG's) PWG Raster. + +Printing speed + +The speed of early printers was measured in units of characters per minute (cpm) for character printers, or lines per minute (lpm) for line printers. Modern printers are measured in pages per minute (ppm). These measures are used primarily as a marketing tool, and are not as well standardised as toner yields. Usually pages per minute refers to sparse monochrome office documents, rather than dense pictures which usually print much more slowly, especially color images. Speeds in ppm usually apply to A4 paper in most countries in the world, and letter paper size, about 6% shorter, in North America. + +Printing mode + +The data received by a printer may be: + + A string of characters + A bitmapped image + A vector image + A computer program written in a page description language, such as PCL or PostScript + +Some printers can process all four types of data, others not. + + Character printers, such as daisy wheel printers, can handle only plain text data or rather simple point plots. + Pen plotters typically process vector images. Inkjet based plotters can adequately reproduce all four. + Modern printing technology, such as laser printers and inkjet printers, can adequately reproduce all four. This is especially true of printers equipped with support for PCL or PostScript, which includes the vast majority of printers produced today. + +Today it is possible to print everything (even plain text) by sending ready bitmapped images to the printer. This allows better control over formatting, especially among machines from different vendors. Many printer drivers do not use the text mode at all, even if the printer is capable of it. + +Monochrome, color and photo printers +A monochrome printer can only produce monochrome images, with only shades of a single color. Most printers can produce only two colors, black (ink) and white (no ink). With half-tonning techniques, however, such a printer can produce acceptable grey-scale images too + +A color printer can produce images of multiple colors. A photo printer is a color printer that can produce images that mimic the color range (gamut) and resolution of prints made from photographic film. + +Page yield + +The page yield is the number of pages that can be printed from a toner cartridge or ink cartridge—before the cartridge needs to be refilled or replaced. +The actual number of pages yielded by a specific cartridge depends on a number of factors. + +For a fair comparison, many laser printer manufacturers use the ISO/IEC 19752 process to measure the toner cartridge yield. + +Economics +In order to fairly compare operating expenses of printers with a relatively small ink cartridge to printers with a larger, more expensive toner cartridge that typically holds more toner and so prints more pages before the cartridge needs to be replaced, many people prefer to estimate operating expenses in terms of cost per page (CPP). + +Retailers often apply the "razor and blades" model: a company may sell a printer at cost and make profits on the ink cartridge, paper, or some other replacement part. This has caused legal disputes regarding the right of companies other than the printer manufacturer to sell compatible ink cartridges. To protect their business model, several manufacturers invest heavily in developing new cartridge technology and patenting it. + +Other manufacturers, in reaction to the challenges from using this business model, choose to make more money on printers and less on ink, promoting the latter through their advertising campaigns. Finally, this generates two clearly different proposals: "cheap printer – expensive ink" or "expensive printer – cheap ink". Ultimately, the consumer decision depends on their reference interest rate or their time preference. From an economics viewpoint, there is a clear trade-off between cost per copy and cost of the printer. + +Printer steganography + +Printer steganography is a type of steganography – "hiding data within data" – produced by color printers, including Brother, Canon, Dell, Epson, HP, IBM, Konica Minolta, Kyocera, Lanier, Lexmark, Ricoh, Toshiba and Xerox brand color laser printers, where tiny yellow dots are added to each page. The dots are barely visible and contain encoded printer serial numbers, as well as date and time stamps. + +Manufacturers and market share +As of 2020-2021, the largest worldwide vendor of printers is Hewlett-Packard, followed by Canon, Brother, Seiko Epson and Kyocera. Other known vendors include NEC, Ricoh, Xerox, Lexmark, OKI, Sharp, Konica Minolta, Samsung, Kodak, Dell, Toshiba, Star Micronics, Citizen and Panasonic. + +See also + + Campus card + Cardboard modeling + Dye-sublimation printer + History of printing + Label printer + List of printer companies + Print (command) + Printer driver + Print screen + Print server + Printer friendly (also known as a printable version) + Printer point + Printer (publishing) + Printmaking + Smart card + Typewriter ribbon + 3D printing + +References + +External links + + +Computer printers +Office equipment +Typography +Articles containing video clips +A copyright is a type of intellectual property that gives its owner the exclusive right to copy, distribute, adapt, display, and perform a creative work, usually for a limited time. The creative work may be in a literary, artistic, educational, or musical form. Copyright is intended to protect the original expression of an idea in the form of a creative work, but not the idea itself. A copyright is subject to limitations based on public interest considerations, such as the fair use doctrine in the United States. + +Some jurisdictions require "fixing" copyrighted works in a tangible form. It is often shared among multiple authors, each of whom holds a set of rights to use or license the work, and who are commonly referred to as rights holders. These rights frequently include reproduction, control over derivative works, distribution, public performance, and moral rights such as attribution. + +Copyrights can be granted by public law and are in that case considered "territorial rights". This means that copyrights granted by the law of a certain state do not extend beyond the territory of that specific jurisdiction. Copyrights of this type vary by country; many countries, and sometimes a large group of countries, have made agreements with other countries on procedures applicable when works "cross" national borders or national rights are inconsistent. + +Typically, the public law duration of a copyright expires 50 to 100 years after the creator dies, depending on the jurisdiction. Some countries require certain copyright formalities to establishing copyright, others recognize copyright in any completed work, without a formal registration. When the copyright of a work expires, it enters the public domain. + +History + +Background +The concept of copyright developed after the printing press came into use in Europe in the 15th and 16th centuries. The printing press made it much cheaper to produce works, but as there was initially no copyright law, anyone could buy or rent a press and print any text. Popular new works were immediately re-set and re-published by competitors, so printers needed a constant stream of new material. Fees paid to authors for new works were high, and significantly supplemented the incomes of many academics. + +Printing brought profound social changes. The rise in literacy across Europe led to a dramatic increase in the demand for reading matter. Prices of reprints were low, so publications could be bought by poorer people, creating a mass audience. In German language markets before the advent of copyright, technical materials, like popular fiction, were inexpensive and widely available; it has been suggested this contributed to Germany's industrial and economic success. After copyright law became established (in 1710 in England and Scotland, and in the 1840s in German-speaking areas) the low-price mass market vanished, and fewer, more expensive editions were published; distribution of scientific and technical information was greatly reduced. + +Conception +The concept of copyright first developed in England. In reaction to the printing of "scandalous books and pamphlets", the English Parliament passed the Licensing of the Press Act 1662, which required all intended publications to be registered with the government-approved Stationers' Company, giving the Stationers the right to regulate what material could be printed. + +The Statute of Anne, enacted in 1710 in England and Scotland, provided the first legislation to protect copyrights (but not authors' rights). The Copyright Act of 1814 extended more rights for authors but did not protect British from reprinting in the US. The Berne International Copyright Convention of 1886 finally provided protection for authors among the countries who signed the agreement, although the US did not join the Berne Convention until 1989. + +In the US, the Constitution grants Congress the right to establish copyright and patent laws. Shortly after the Constitution was passed, Congress enacted the Copyright Act of 1790, modeling it after the Statute of Anne. While the national law protected authors’ published works, authority was granted to the states to protect authors’ unpublished works. The most recent major overhaul of copyright in the US, the 1976 Copyright Act, extended federal copyright to works as soon as they are created and "fixed", without requiring publication or registration. State law continues to apply to unpublished works that are not otherwise copyrighted by federal law. This act also changed the calculation of copyright term from a fixed term (then a maximum of fifty-six years) to "life of the author plus 50 years". These changes brought the US closer to conformity with the Berne Convention, and in 1989 the United States further revised its copyright law and joined the Berne Convention officially. + +Copyright laws allow products of creative human activities, such as literary and artistic production, to be preferentially exploited and thus incentivized. Different cultural attitudes, social organizations, economic models and legal frameworks are seen to account for why copyright emerged in Europe and not, for example, in Asia. In the Middle Ages in Europe, there was generally a lack of any concept of literary property due to the general relations of production, the specific organization of literary production and the role of culture in society. The latter refers to the tendency of oral societies, such as that of Europe in the medieval period, to view knowledge as the product and expression of the collective, rather than to see it as individual property. However, with copyright laws, intellectual production comes to be seen as a product of an individual, with attendant rights. The most significant point is that patent and copyright laws support the expansion of the range of creative human activities that can be commodified. This parallels the ways in which capitalism led to the commodification of many aspects of social life that earlier had no monetary or economic value per se. + +Copyright has developed into a concept that has a significant effect on nearly every modern industry, including not just literary work, but also forms of creative work such as sound recordings, films, photographs, software, and architecture. + +National copyrights + +Often seen as the first real copyright law, the 1709 British Statute of Anne gave the publishers rights for a fixed period, after which the copyright expired. +The act also alluded to individual rights of the artist. It began, "Whereas Printers, Booksellers, and other Persons, have of late frequently taken the Liberty of Printing ... Books, and other Writings, without the Consent of the Authors ... to their very great Detriment, and too often to the Ruin of them and their Families:". A right to benefit financially from the work is articulated, and court rulings and legislation have recognized a right to control the work, such as ensuring that the integrity of it is preserved. An irrevocable right to be recognized as the work's creator appears in some countries' copyright laws. + +The Copyright Clause of the United States, Constitution (1787) authorized copyright legislation: "To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries." That is, by guaranteeing them a period of time in which they alone could profit from their works, they would be enabled and encouraged to invest the time required to create them, and this would be good for society as a whole. A right to profit from the work has been the philosophical underpinning for much legislation extending the duration of copyright, to the life of the creator and beyond, to their heirs. + +The original length of copyright in the United States was 14 years, and it had to be explicitly applied for. If the author wished, they could apply for a second 14‑year monopoly grant, but after that the work entered the public domain, so it could be used and built upon by others. + +Copyright law was enacted rather late in German states, and the historian Eckhard Höffner argues that the absence of copyright laws in the early 19th century encouraged publishing, was profitable for authors, led to a proliferation of books, enhanced knowledge, and was ultimately an important factor in the ascendency of Germany as a power during that century. However, empirical evidence derived from the exogenous differential introduction of copyright in Napoleonic Italy shows that "basic copyrights increased both the number and the quality of operas, measured by their popularity and durability". + +International copyright treaties + +The 1886 Berne Convention first established recognition of copyrights among sovereign nations, rather than merely bilaterally. Under the Berne Convention, copyrights for creative works do not have to be asserted or declared, as they are automatically in force at creation: an author need not "register" or "apply for" a copyright in countries adhering to the Berne Convention. As soon as a work is "fixed", that is, written or recorded on some physical medium, its author is automatically entitled to all copyrights in the work, and to any derivative works unless and until the author explicitly disclaims them, or until the copyright expires. The Berne Convention also resulted in foreign authors being treated equivalently to domestic authors, in any country signed onto the Convention. The UK signed the Berne Convention in 1887 but did not implement large parts of it until 100 years later with the passage of the Copyright, Designs and Patents Act 1988. Specially, for educational and scientific research purposes, the Berne Convention provides the developing countries issue compulsory licenses for the translation or reproduction of copyrighted works within the limits prescribed by the Convention. This was a special provision that had been added at the time of 1971 revision of the Convention, because of the strong demands of the developing countries. The United States did not sign the Berne Convention until 1989. + +The United States and most Latin American countries instead entered into the Buenos Aires Convention in 1910, which required a copyright notice on the work (such as all rights reserved), and permitted signatory nations to limit the duration of copyrights to shorter and renewable terms. The Universal Copyright Convention was drafted in 1952 as another less demanding alternative to the Berne Convention, and ratified by nations such as the Soviet Union and developing nations. + +The regulations of the Berne Convention are incorporated into the World Trade Organization's TRIPS agreement (1995), thus giving the Berne Convention effectively near-global application. + +In 1961, the United International Bureaux for the Protection of Intellectual Property signed the Rome Convention for the Protection of Performers, Producers of Phonograms and Broadcasting Organizations. In 1996, this organization was succeeded by the founding of the World Intellectual Property Organization, which launched the 1996 WIPO Performances and Phonograms Treaty and the 2002 WIPO Copyright Treaty, which enacted greater restrictions on the use of technology to copy works in the nations that ratified it. The Trans-Pacific Partnership includes intellectual Property Provisions relating to copyright. + +Copyright laws are standardized somewhat through these international conventions such as the Berne Convention and Universal Copyright Convention. These multilateral treaties have been ratified by nearly all countries, and international organizations such as the European Union or World Trade Organization require their member states to comply with them. + +Obtaining protection + +Ownership +The original holder of the copyright may be the employer of the author rather than the author themself if the work is a "work for hire". For example, in English law the Copyright, Designs and Patents Act 1988 provides that if a copyrighted work is made by an employee in the course of that employment, the copyright is automatically owned by the employer which would be a "Work for Hire". Typically, the first owner of a copyright is the person who created the work i.e. the author. But when more than one person creates the work, then a case of joint authorship can be made provided some criteria are met. + +Eligible works +Copyright may apply to a wide range of creative, intellectual, or artistic forms, or "works". Specifics vary by jurisdiction, but these can include poems, theses, fictional characters, plays and other literary works, motion pictures, choreography, musical compositions, sound recordings, paintings, drawings, sculptures, photographs, computer software, radio and television broadcasts, and industrial designs. Graphic designs and industrial designs may have separate or overlapping laws applied to them in some jurisdictions. + +Copyright does not cover ideas and information themselves, only the form or manner in which they are expressed. For example, the copyright to a Mickey Mouse cartoon restricts others from making copies of the cartoon or creating derivative works based on Disney's particular anthropomorphic mouse, but does not prohibit the creation of other works about anthropomorphic mice in general, so long as they are different enough to not be judged copies of Disney's. Note additionally that Mickey Mouse is not copyrighted because characters cannot be copyrighted; rather, Steamboat Willie is copyrighted and Mickey Mouse, as a character in that copyrighted work, is afforded protection. + +Originality + +Typically, a work must meet minimal standards of originality in order to qualify for copyright, and the copyright expires after a set period of time (some jurisdictions may allow this to be extended). Different countries impose different tests, although generally the requirements are low; in the United Kingdom there has to be some "skill, labour, and judgment" that has gone into it. In Australia and the United Kingdom it has been held that a single word is insufficient to comprise a copyright work. However, single words or a short string of words can sometimes be registered as a trademark instead. + +Copyright law recognizes the right of an author based on whether the work actually is an original creation, rather than based on whether it is unique; two authors may own copyright on two substantially identical works, if it is determined that the duplication was coincidental, and neither was copied from the other. + +Registration + +In all countries where the Berne Convention standards apply, copyright is automatic, and need not be obtained through official registration with any government office. Once an idea has been reduced to tangible form, for example by securing it in a fixed medium (such as a drawing, sheet music, photograph, a videotape, or a computer file), the copyright holder is entitled to enforce their exclusive rights. However, while registration is not needed to exercise copyright, in jurisdictions where the laws provide for registration, it serves as prima facie evidence of a valid copyright and enables the copyright holder to seek statutory damages and attorney's fees. (In the US, registering after an infringement only enables one to receive actual damages and lost profits.) + +A widely circulated strategy to avoid the cost of copyright registration is referred to as the poor man's copyright. It proposes that the creator send the work to themself in a sealed envelope by registered mail, using the postmark to establish the date. This technique has not been recognized in any published opinions of the United States courts. The United States Copyright Office says the technique is not a substitute for actual registration. The United Kingdom Intellectual Property Office discusses the technique and notes that the technique (as well as commercial registries) does not constitute dispositive proof that the work is original or establish who created the work. + +Fixing +The Berne Convention allows member countries to decide whether creative works must be "fixed" to enjoy copyright. Article 2, Section 2 of the Berne Convention states: "It shall be a matter for legislation in the countries of the Union to prescribe that works in general or any specified categories of works shall not be protected unless they have been fixed in some material form." Some countries do not require that a work be produced in a particular form to obtain copyright protection. For instance, Spain, France, and Australia do not require fixation for copyright protection. The United States and Canada, on the other hand, require that most works must be "fixed in a tangible medium of expression" to obtain copyright protection. US law requires that the fixation be stable and permanent enough to be "perceived, reproduced or communicated for a period of more than transitory duration". Similarly, Canadian courts consider fixation to require that the work be "expressed to some extent at least in some material form, capable of identification and having a more or less permanent endurance". + +Note this provision of US law: c) Effect of Berne Convention.—No right or interest in a work eligible for protection under this title may be claimed by virtue of, or in reliance upon, the provisions of the Berne Convention, or the adherence of the United States thereto. Any rights in a work eligible for protection under this title that derive from this title, other Federal or State statutes, or the common law, shall not be expanded or reduced by virtue of, or in reliance upon, the provisions of the Berne Convention, or the adherence of the United States thereto. + +Copyright notice + +Before 1989, United States law required the use of a copyright notice, consisting of the copyright symbol (©, the letter C inside a circle), the abbreviation "Copr.", or the word "Copyright", followed by the year of the first publication of the work and the name of the copyright holder. Several years may be noted if the work has gone through substantial revisions. The proper copyright notice for sound recordings of musical or other audio works is a sound recording copyright symbol (℗, the letter P inside a circle), which indicates a sound recording copyright, with the letter P indicating a "phonorecord". In addition, the phrase All rights reserved which indicates that the copyright holder reserves, or holds for their own use was once required to assert copyright, but that phrase is now legally obsolete. Almost everything on the Internet has some sort of copyright attached to it. Whether these things are watermarked, signed, or have any other sort of indication of the copyright is a different story however. + +In 1989 the United States enacted the Berne Convention Implementation Act, amending the 1976 Copyright Act to conform to most of the provisions of the Berne Convention. As a result, the use of copyright notices has become optional to claim copyright, because the Berne Convention makes copyright automatic. However, the lack of notice of copyright using these marks may have consequences in terms of reduced damages in an infringement lawsuit – using notices of this form may reduce the likelihood of a defense of "innocent infringement" being successful. + +Enforcement +Copyrights are generally enforced by the holder in a civil law court, but there are also criminal infringement statutes in some jurisdictions. While central registries are kept in some countries which aid in proving claims of ownership, registering does not necessarily prove ownership, nor does the fact of copying (even without permission) necessarily prove that copyright was infringed. Criminal sanctions are generally aimed at serious counterfeiting activity, but are now becoming more commonplace as copyright collectives such as the RIAA are increasingly targeting the file sharing home Internet user. Thus far, however, most such cases against file sharers have been settled out of court. (See Legal aspects of file sharing) + +In most jurisdictions the copyright holder must bear the cost of enforcing copyright. This will usually involve engaging legal representation, administrative or court costs. In light of this, many copyright disputes are settled by a direct approach to the infringing party in order to settle the dispute out of court. + +"... by 1978, the scope was expanded to apply to any 'expression' that has been 'fixed' in any medium, this protection granted automatically whether the maker wants it or not, no registration required." + +Copyright infringement + +For a work to be considered to infringe upon copyright, its use must have occurred in a nation that has domestic copyright laws or adheres to a bilateral treaty or established international convention such as the Berne Convention or WIPO Copyright Treaty. Improper use of materials outside of legislation is deemed "unauthorized edition", not copyright infringement. + +Statistics regarding the effects of copyright infringement are difficult to determine. Studies have attempted to determine whether there is a monetary loss for industries affected by copyright infringement by predicting what portion of pirated works would have been formally purchased if they had not been freely available. Other reports indicate that copyright infringement does not have an adverse effect on the entertainment industry, and can have a positive effect. In particular, a 2014 university study concluded that free music content, accessed on YouTube, does not necessarily hurt sales, instead has the potential to increase sales. + +According to the IP Commission Report the annual cost of intellectual property theft to the US economy "continues to exceed $225 billion in counterfeit goods, pirated software, and theft of trade secrets and could be as high as $600 billion." A 2019 study sponsored by the US Chamber of Commerce Global Innovation Policy Center (GIPC), in partnership with NERA Economic Consulting "estimates that global online piracy costs the U.S. economy at least $29.2 billion in lost revenue each year." An August 2021 report by the Digital Citizens Alliance states that "online criminals who offer stolen movies, TV shows, games, and live events through websites and apps are reaping $1.34 billion in annual advertising revenues." This comes as a result of users visiting pirate websites who are then subjected to pirated content, malware, and fraud. + +Rights granted +According to World Intellectual Property Organisation, copyright protects two types of rights. Economic rights allow right owners to derive financial reward from the use of their works by others. Moral rights allow authors and creators to take certain actions to preserve and protect their link with their work. The author or creator may be the owner of the economic rights or those rights may be transferred to one or more copyright owners. Many countries do not allow the transfer of moral rights. + +Economic rights +With any kind of property, its owner may decide how it is to be used, and others can use it lawfully only if they have the owner's permission, often through a license. The owner's use of the property must, however, respect the legally recognised rights and interests of other members of society. So the owner of a copyright-protected work may decide how to use the work, and may prevent others from using it without permission. National laws usually grant copyright owners exclusive rights to allow third parties to use their works, subject to the legally recognised rights and interests of others. Most copyright laws state that authors or other right owners have the right to authorise or prevent certain acts in relation to a work. Right owners can authorise or prohibit: + + reproduction of the work in various forms, such as printed publications or sound recordings; + distribution of copies of the work; + public performance of the work; + broadcasting or other communication of the work to the public; + translation of the work into other languages; and + adaptation of the work, such as turning a novel into a screenplay. + +Moral rights + +Moral rights are concerned with the non-economic rights of a creator. They protect the creator's connection with a work as well as the integrity of the work. Moral rights are only accorded to individual authors and in many national laws they remain with the authors even after the authors have transferred their economic rights. In some EU countries, such as France, moral rights last indefinitely. In the UK, however, moral rights are finite. That is, the right of attribution and the right of integrity last only as long as the work is in copyright. When the copyright term comes to an end, so too do the moral rights in that work. This is just one reason why the moral rights regime within the UK is often regarded as weaker or inferior to the protection of moral rights in continental Europe and elsewhere in the world. The Berne Convention, in Article 6bis, requires its members to grant authors the following rights: + + the right to claim authorship of a work (sometimes called the right of paternity or the right of attribution); and + the right to object to any distortion or modification of a work, or other derogatory action in relation to a work, which would be prejudicial to the author's honour or reputation (sometimes called the right of integrity). + +These and other similar rights granted in national laws are generally known as the moral rights of authors. The Berne Convention requires these rights to be independent of authors’ economic rights. Moral rights are only accorded to individual authors and in many national laws they remain with the authors even after the authors have transferred their economic rights. This means that even where, for example, a film producer or publisher owns the economic rights in a work, in many jurisdictions the individual author continues to have moral rights. Recently, as a part of the debates being held at the US Copyright Office on the question of inclusion of Moral Rights as a part of the framework of the Copyright Law in United States, the Copyright Office concluded that many diverse aspects of the current moral rights patchwork – including copyright law's derivative work right, state moral rights statutes, and contract law – are generally working well and should not be changed. Further, the Office concludes that there is no need for the creation of a blanket moral rights statute at this time. However, there are aspects of the US moral rights patchwork that could be improved to the benefit of individual authors and the copyright system as a whole. + +The Copyright Law in the United States, several exclusive rights are granted to the holder of a copyright, as are listed below: + + protection of the work; + to determine and decide how, and under what conditions, the work may be marketed, publicly displayed, reproduced, distributed, etc. + to produce copies or reproductions of the work and to sell those copies; (including, typically, electronic copies) + to import or export the work; + to create derivative works; (works that adapt the original work) + to perform or display the work publicly; + to sell or cede these rights to others; + to transmit or display by radio, video or internet. + +The basic right when a work is protected by copyright is that the holder may determine and decide how and under what conditions the protected work may be used by others. This includes the right to decide to distribute the work for free. This part of copyright is often overseen. The phrase "exclusive right" means that only the copyright holder is free to exercise those rights, and others are prohibited from using the work without the holder's permission. Copyright is sometimes called a "negative right", as it serves to prohibit certain people (e.g., readers, viewers, or listeners, and primarily publishers and would be publishers) from doing something they would otherwise be able to do, rather than permitting people (e.g., authors) to do something they would otherwise be unable to do. In this way it is similar to the unregistered design right in English law and European law. The rights of the copyright holder also permit him/her to not use or exploit their copyright, for some or all of the term. There is, however, a critique which rejects this assertion as being based on a philosophical interpretation of copyright law that is not universally shared. There is also debate on whether copyright should be considered a property right or a moral right. + +UK copyright law gives creators both economic rights and moral rights. While ‘copying’ someone else's work without permission may constitute an infringement of their economic rights, that is, the reproduction right or the right of communication to the public, whereas, ‘mutilating’ it might infringe the creator's moral rights. In the UK, moral rights include the right to be identified as the author of the work, which is generally identified as the right of attribution, and the right not to have your work subjected to ‘derogatory treatment’, that is the right of integrity. + +Indian copyright law is at parity with the international standards as contained in TRIPS. The Indian Copyright Act, 1957, pursuant to the amendments in 1999, 2002 and 2012, fully reflects the Berne Convention and the Universal Copyrights Convention, to which India is a party. India is also a party to the Geneva Convention for the Protection of Rights of Producers of Phonograms and is an active member of the World Intellectual Property Organization (WIPO) and United Nations Educational, Scientific and Cultural Organization (UNESCO). The Indian system provides both the economic and moral rights under different provisions of its Indian Copyright Act of 1957. + +Duration + +Copyright subsists for a variety of lengths in different jurisdictions. The length of the term can depend on several factors, including the type of work (e.g. musical composition, novel), whether the work has been published, and whether the work was created by an individual or a corporation. In most of the world, the default length of copyright is the life of the author plus either 50 or 70 years. In the United States, the term for most existing works is a fixed number of years after the date of creation or publication. Under most countries' laws (for example, the United States and the United Kingdom), copyrights expire at the end of the calendar year in which they would otherwise expire. + +The length and requirements for copyright duration are subject to change by legislation, and since the early 20th century there have been a number of adjustments made in various countries, which can make determining the duration of a given copyright somewhat difficult. For example, the United States used to require copyrights to be renewed after 28 years to stay in force, and formerly required a copyright notice upon first publication to gain coverage. In Italy and France, there were post-wartime extensions that could increase the term by approximately 6 years in Italy and up to about 14 in France. Many countries have extended the length of their copyright terms (sometimes retroactively). International treaties establish minimum terms for copyrights, but individual countries may enforce longer terms than those. + +In the United States, all books and other works, except for sound recordings, published before 1928 have expired copyrights and are in the public domain. The applicable date for sound recordings in the United States is before 1923. In addition, works published before 1964 that did not have their copyrights renewed 28 years after first publication year also are in the public domain. Hirtle points out that the great majority of these works (including 93% of the books) were not renewed after 28 years and are in the public domain. Books originally published outside the US by non-Americans are exempt from this renewal requirement, if they are still under copyright in their home country. + +But if the intended exploitation of the work includes publication (or distribution of derivative work, such as a film based on a book protected by copyright) outside the US, the terms of copyright around the world must be considered. If the author has been dead more than 70 years, the work is in the public domain in most, but not all, countries. + +In 1998, the length of a copyright in the United States was increased by 20 years under the Copyright Term Extension Act. This legislation was strongly promoted by corporations which had valuable copyrights which otherwise would have expired, and has been the subject of substantial criticism on this point. + +Limitations and exceptions + +In many jurisdictions, copyright law makes exceptions to these restrictions when the work is copied for the purpose of commentary or other related uses. United States copyright law does not cover names, titles, short phrases or listings (such as ingredients, recipes, labels, or formulas). However, there are protections available for those areas copyright does not cover, such as trademarks and patents. + +Idea–expression dichotomy and the merger doctrine + +The idea–expression divide differentiates between ideas and expression, and states that copyright protects only the original expression of ideas, and not the ideas themselves. This principle, first clarified in the 1879 case of Baker v. Selden, has since been codified by the Copyright Act of 1976 at 17 U.S.C. § 102(b). + +The first-sale doctrine and exhaustion of rights + +Copyright law does not restrict the owner of a copy from reselling legitimately obtained copies of copyrighted works, provided that those copies were originally produced by or with the permission of the copyright holder. It is therefore legal, for example, to resell a copyrighted book or CD. In the United States this is known as the first-sale doctrine, and was established by the courts to clarify the legality of reselling books in second-hand bookstores. + +Some countries may have parallel importation restrictions that allow the copyright holder to control the aftermarket. This may mean for example that a copy of a book that does not infringe copyright in the country where it was printed does infringe copyright in a country into which it is imported for retailing. The first-sale doctrine is known as exhaustion of rights in other countries and is a principle which also applies, though somewhat differently, to patent and trademark rights. It is important to note that the first-sale doctrine permits the transfer of the particular legitimate copy involved. It does not permit making or distributing additional copies. + +In Kirtsaeng v. John Wiley & Sons, Inc., in 2013, the United States Supreme Court held in a 6–3 decision that the first-sale doctrine applies to goods manufactured abroad with the copyright owner's permission and then imported into the US without such permission. The case involved a plaintiff who imported Asian editions of textbooks that had been manufactured abroad with the publisher-plaintiff's permission. The defendant, without permission from the publisher, imported the textbooks and resold on eBay. The Supreme Court's holding severely limits the ability of copyright holders to prevent such importation. + +In addition, copyright, in most cases, does not prohibit one from acts such as modifying, defacing, or destroying one's own legitimately obtained copy of a copyrighted work, so long as duplication is not involved. However, in countries that implement moral rights, a copyright holder can in some cases successfully prevent the mutilation or destruction of a work that is publicly visible. + +Fair use and fair dealing + +Copyright does not prohibit all copying or replication. In the United States, the fair use doctrine, codified by the Copyright Act of 1976 as 17 U.S.C. Section 107, permits some copying and distribution without permission of the copyright holder or payment to same. The statute does not clearly define fair use, but instead gives four non-exclusive factors to consider in a fair use analysis. Those factors are: + the purpose and character of one's use; + the nature of the copyrighted work; + what amount and proportion of the whole work was taken; + the effect of the use upon the potential market for or value of the copyrighted work. + +In the United Kingdom and many other Commonwealth countries, a similar notion of fair dealing was established by the courts or through legislation. The concept is sometimes not well defined; however in Canada, private copying for personal use has been expressly permitted by statute since 1999. In Alberta (Education) v. Canadian Copyright Licensing Agency (Access Copyright), 2012 SCC 37, the Supreme Court of Canada concluded that limited copying for educational purposes could also be justified under the fair dealing exemption. In Australia, the fair dealing exceptions under the Copyright Act 1968 (Cth) are a limited set of circumstances under which copyrighted material can be legally copied or adapted without the copyright holder's consent. Fair dealing uses are research and study; review and critique; news reportage and the giving of professional advice (i.e. legal advice). Under current Australian law, although it is still a breach of copyright to copy, reproduce or adapt copyright material for personal or private use without permission from the copyright owner, owners of a legitimate copy are permitted to "format shift" that work from one medium to another for personal, private use, or to "time shift" a broadcast work for later, once and only once, viewing or listening. Other technical exemptions from infringement may also apply, such as the temporary reproduction of a work in machine readable form for a computer. + +In the United States the AHRA (Audio Home Recording Act Codified in Section 10, 1992) prohibits action against consumers making noncommercial recordings of music, in return for royalties on both media and devices plus mandatory copy-control mechanisms on recorders. + +Later acts amended US Copyright law so that for certain purposes making 10 copies or more is construed to be commercial, but there is no general rule permitting such copying. Indeed, making one complete copy of a work, or in many cases using a portion of it, for commercial purposes will not be considered fair use. The Digital Millennium Copyright Act prohibits the manufacture, importation, or distribution of devices whose intended use, or only significant commercial use, is to bypass an access or copy control put in place by a copyright owner. An appellate court has held that fair use is not a defense to engaging in such distribution. + +EU copyright laws recognise the right of EU member states to implement some national exceptions to copyright. Examples of those exceptions are: + photographic reproductions on paper or any similar medium of works (excluding sheet music) provided that the rightholders receives fair compensation; + reproduction made by libraries, educational establishments, museums or archives, which are non-commercial; + archival reproductions of broadcasts; + uses for the benefit of people with a disability; + for demonstration or repair of equipment; + for non-commercial research or private study; + when used in parody. + +Accessible copies +It is legal in several countries including the United Kingdom and the United States to produce alternative versions (for example, in large print or braille) of a copyrighted work to provide improved access to a work for blind and visually impaired people without permission from the copyright holder. + +Religious Service Exemption +In the US there is a Religious Service Exemption (1976 law, section 110[3]), namely "performance of a non-dramatic literary or musical work or of a dramatico-musical work of a religious nature or display of a work, in the course of services at a place of worship or other religious assembly" shall not constitute infringement of copyright. + +Useful articles +In Canada, items deemed useful articles such as clothing designs are exempted from copyright protection under the Copyright Act if reproduced more than 50 times. Fast fashion brands may reproduce clothing designs from smaller companies without violating copyright protections. + +Transfer, assignment and licensing + +A copyright, or aspects of it (e.g. reproduction alone, all but moral rights), may be assigned or transferred from one party to another. For example, a musician who records an album will often sign an agreement with a record company in which the musician agrees to transfer all copyright in the recordings in exchange for royalties and other considerations. The creator (and original copyright holder) benefits, or expects to, from production and marketing capabilities far beyond those of the author. In the digital age of music, music may be copied and distributed at minimal cost through the Internet; however, the record industry attempts to provide promotion and marketing for the artist and their work so it can reach a much larger audience. A copyright holder need not transfer all rights completely, though many publishers will insist. Some of the rights may be transferred, or else the copyright holder may grant another party a non-exclusive license to copy or distribute the work in a particular region or for a specified period of time. + +A transfer or licence may have to meet particular formal requirements in order to be effective, for example under the Australian Copyright Act 1968 the copyright itself must be expressly transferred in writing. Under the US Copyright Act, a transfer of ownership in copyright must be memorialized in a writing signed by the transferor. For that purpose, ownership in copyright includes exclusive licenses of rights. Thus exclusive licenses, to be effective, must be granted in a written instrument signed by the grantor. No special form of transfer or grant is required. A simple document that identifies the work involved and the rights being granted is sufficient. Non-exclusive grants (often called non-exclusive licenses) need not be in writing under US law. They can be oral or even implied by the behavior of the parties. Transfers of copyright ownership, including exclusive licenses, may and should be recorded in the U.S. Copyright Office. (Information on recording transfers is available on the Office's web site.) While recording is not required to make the grant effective, it offers important benefits, much like those obtained by recording a deed in a real estate transaction. + +Copyright may also be licensed. Some jurisdictions may provide that certain classes of copyrighted works be made available under a prescribed statutory license (e.g. musical works in the United States used for radio broadcast or performance). This is also called a compulsory license, because under this scheme, anyone who wishes to copy a covered work does not need the permission of the copyright holder, but instead merely files the proper notice and pays a set fee established by statute (or by an agency decision under statutory guidance) for every copy made. Failure to follow the proper procedures would place the copier at risk of an infringement suit. Because of the difficulty of following every individual work, copyright collectives or collecting societies and performing rights organizations (such as ASCAP, BMI, and SESAC) have been formed to collect royalties for hundreds (thousands and more) works at once. Though this market solution bypasses the statutory license, the availability of the statutory fee still helps dictate the price per work collective rights organizations charge, driving it down to what avoidance of procedural hassle would justify. + +Free licenses + +Copyright licenses known as open or free licenses seek to grant several rights to licensees, either for a fee or not. Free in this context is not as much of a reference to price as it is to freedom. What constitutes free licensing has been characterised in a number of similar definitions, including by order of longevity the Free Software Definition, the Debian Free Software Guidelines, the Open Source Definition and the Definition of Free Cultural Works. Further refinements to these definitions have resulted in categories such as copyleft and permissive. Common examples of free licences are the GNU General Public License, BSD licenses and some Creative Commons licenses. + +Founded in 2001 by James Boyle, Lawrence Lessig, and Hal Abelson, the Creative Commons (CC) is a non-profit organization which aims to facilitate the legal sharing of creative works. To this end, the organization provides a number of generic copyright license options to the public, gratis. These licenses allow copyright holders to define conditions under which others may use a work and to specify what types of use are acceptable. + +Terms of use have traditionally been negotiated on an individual basis between copyright holder and potential licensee. Therefore, a general CC license outlining which rights the copyright holder is willing to waive enables the general public to use such works more freely. Six general types of CC licenses are available (although some of them are not properly free per the above definitions and per Creative Commons' own advice). These are based upon copyright-holder stipulations such as whether they are willing to allow modifications to the work, whether they permit the creation of derivative works and whether they are willing to permit commercial use of the work. approximately 130 million individuals had received such licenses. + +Criticism + +Some sources are critical of particular aspects of the copyright system. This is known as a debate over copynorms. Particularly to the background of uploading content to internet platforms and the digital exchange of original work, there is discussion about the copyright aspects of downloading and streaming, the copyright aspects of hyperlinking and framing. + +Concerns are often couched in the language of digital rights, digital freedom, database rights, open data or censorship. Discussions include Free Culture, a 2004 book by Lawrence Lessig. Lessig coined the term permission culture to describe a worst-case system. Good Copy Bad Copy (documentary) and RiP!: A Remix Manifesto, discuss copyright. Some suggest an alternative compensation system. In Europe consumers are acting up against the raising costs of music, film and books, and as a result Pirate Parties have been created. Some groups reject copyright altogether, taking an anti-copyright stance. The perceived inability to enforce copyright online leads some to advocate ignoring legal statutes when on the web. + +Public domain + +Copyright, like other intellectual property rights, is subject to a statutorily determined term. Once the term of a copyright has expired, the formerly copyrighted work enters the public domain and may be used or exploited by anyone without obtaining permission, and normally without payment. However, in paying public domain regimes the user may still have to pay royalties to the state or to an authors' association. Courts in common law countries, such as the United States and the United Kingdom, have rejected the doctrine of a common law copyright. Public domain works should not be confused with works that are publicly available. Works posted in the internet, for example, are publicly available, but are not generally in the public domain. Copying such works may therefore violate the author's copyright. + +See also + + Adelphi Charter + Artificial scarcity + Authors' rights and related rights, roughly equivalent concepts in civil law countries + Conflict of laws + Copyfraud + Copyleft + Copyright abolition + Copyright Alliance + Copyright alternatives + Copyright for Creativity + Copyright in architecture in the United States + Copyright on the content of patents and in the context of patent prosecution + Criticism of copyright + Criticism of intellectual property + Directive on Copyright in the Digital Single Market (European Union) + Copyright infringement + Copyright Remedy Clarification Act (CRCA) + Digital rights management + Digital watermarking + Entertainment law + Freedom of panorama + Information literacies + Intellectual property protection of typefaces + List of Copyright Acts + List of copyright case law + Literary property + Model release + Paracopyright + Philosophy of copyright + Photography and the law + Pirate Party + Printing patent, a precursor to copyright + Private copying levy + Production music + Rent-seeking + Reproduction fees + Samizdat + Software copyright + Threshold pledge system + World Book and Copyright Day + +References + +Further reading + + + Ellis, Sara R. Copyrighting Couture: An Examination of Fashion Design Protection and Why the DPPA and IDPPPA are a Step Towards the Solution to Counterfeit Chic, 78 Tenn. L. Rev. 163 (2010), available at Copyrighting Couture: An Examination of Fashion Design Protection and Why the DPPA and IDPPPA are a Step Towards the Solution to Counterfeit Chic. + Ghosemajumder, Shuman. Advanced Peer-Based Technology Business Models. MIT Sloan School of Management, 2002. + Lehman, Bruce: Intellectual Property and the National Information Infrastructure (Report of the Working Group on Intellectual Property Rights, 1995) + Lindsey, Marc: Copyright Law on Campus. Washington State University Press, 2003. . + Mazzone, Jason. Copyfraud. SSRN + McDonagh, Luke. Is Creative use of Musical Works without a licence acceptable under Copyright? International Review of Intellectual Property and Competition Law (IIC) 4 (2012) 401–426, available at SSRN + + + Rife, by Martine Courant. Convention, Copyright, and Digital Writing (Southern Illinois University Press; 2013) 222 pages; Examines legal, pedagogical, and other aspects of online authorship. + + Shipley, David E. "Thin But Not Anorexic: Copyright Protection for Compilations and Other Fact Works" UGA Legal Studies Research Paper No. 08-001; Journal of Intellectual Property Law, Vol. 15, No. 1, 2007. + Silverthorne, Sean. Music Downloads: Pirates- or Customers? . Harvard Business School Working Knowledge, 2004. + Sorce Keller, Marcello. "Originality, Authenticity and Copyright", Sonus, VII(2007), no. 2, pp. 77–85. + + + +Rose, M. (1993), Authors and Owners: The Invention of Copyright, London: Harvard University Press +Loewenstein, J. (2002), The Author's Due: Printing and the Prehistory of Copyright, London: University of Chicago Press. + +External links + + A simplified guide. + + WIPOLex from WIPO; global database of treaties and statutes relating to intellectual property + Copyright Berne Convention: Country List List of the 164 members of the Berne Convention for the protection of literary and artistic works +Copyright and State Sovereign Immunity, U.S. Copyright Office +The Multi-Billion-Dollar Piracy Industry with Tom Galvin of Digital Citizens Alliance, The Illusion of More Podcast + Education + Copyright Cortex + A Bibliography on the Origins of Copyright and Droit d'Auteur + MIT OpenCourseWare 6.912 Introduction to Copyright Law Free self-study course with video lectures as offered during the January 2006, Independent Activities Period (IAP) + US + Copyright Law of the United States Documents, US Government + Compendium of Copyright Practices (3rd ed.) United States Copyright Office + Copyright from UCB Libraries GovPubs + Early Copyright Records From the Rare Book and Special Collections Division at the Library of Congress + UK + Copyright: Detailed information at the UK Intellectual Property Office + Fact sheet P-01: UK copyright law (Issued April 2000, amended 25 November 2020) at the UK Copyright Service + + +Data management +Intellectual property law +Monopoly (economics) +Product management +Public records +Intangible assets +Catalan (; autonym: , ), known in the Valencian Community and Carche as Valencian (autonym: ), is a Western Romance language. It is the official language of Andorra, and an official language of two autonomous communities in eastern Spain: Catalonia and the Balearic Islands. It is also an official language in Valencia, where it is called Valencian. It has semi-official status in the Italian comune of Alghero, and it is spoken in the Pyrénées-Orientales department of France and in two further areas in eastern Spain: the eastern strip of Aragon and the Carche area in the Region of Murcia. The Catalan-speaking territories are often called the or "Catalan Countries". + +The language evolved from Vulgar Latin in the Middle Ages around the eastern Pyrenees. Nineteenth-century Spain saw a Catalan literary revival, culminating in the early 1900s. + +Etymology and pronunciation + +The word Catalan is derived from the territorial name of Catalonia, itself of disputed etymology. The main theory suggests that (Latin Gathia Launia) derives from the name Gothia or Gauthia ("Land of the Goths"), since the origins of the Catalan counts, lords and people were found in the March of Gothia, whence Gothland > Gothlandia > Gothalania > Catalonia theoretically derived. + +In English, the term referring to a person first appears in the mid 14th century as Catelaner, followed in the 15th century as Catellain (from French). It is attested a language name since at least 1652. The word Catalan can be pronounced in English as , or . + +The endonym is pronounced in the Eastern Catalan dialects, and in the Western dialects. In the Valencian Community and Carche, the term is frequently used instead. Thus, the name "Valencian", although often employed for referring to the varieties specific to the Valencian Community and Carche, is also used by Valencians as a name for the language as a whole, synonymous with "Catalan". Both uses of the term have their respective entries in the dictionaries by the Acadèmia Valenciana de la Llengua and the Institut d'Estudis Catalans. See also status of Valencian below. + +History + +Middle Ages + +By the 9th century, Catalan had evolved from Vulgar Latin on both sides of the eastern end of the Pyrenees, as well as the territories of the Roman province of Hispania Tarraconensis to the south. From the 8th century onwards the Catalan counts extended their territory southwards and westwards at the expense of the Muslims, bringing their language with them. This process was given definitive impetus with the separation of the County of Barcelona from the Carolingian Empire in 988. + +In the 11th century, documents written in macaronic Latin begin to show Catalan elements, with texts written almost completely in Romance appearing by 1080. Old Catalan shared many features with Gallo-Romance, diverging from Old Occitan between the 11th and 14th centuries. + +During the 11th and 12th centuries the Catalan rulers expanded southward to the Ebro river, and in the 13th century they conquered the Land of Valencia and the Balearic Islands. The city of Alghero in Sardinia was repopulated with Catalan speakers in the 14th century. The language also reached Murcia, which became Spanish-speaking in the 15th century. + +In the Low Middle Ages, Catalan went through a golden age, reaching a peak of maturity and cultural richness. Examples include the work of Majorcan polymath Ramon Llull (1232–1315), the Four Great Chronicles (13th–14th centuries), and the Valencian school of poetry culminating in Ausiàs March (1397–1459). By the 15th century, the city of Valencia had become the sociocultural center of the Crown of Aragon, and Catalan was present all over the Mediterranean world. During this period, the Royal Chancery propagated a highly standardized language. Catalan was widely used as an official language in Sicily until the 15th century, and in Sardinia until the 17th. During this period, the language was what Costa Carreras terms "one of the 'great languages' of medieval Europe". + +Martorell's outstanding novel of chivalry Tirant lo Blanc (1490) shows a transition from Medieval to Renaissance values, something that can also be seen in Metge's work. The first book produced with movable type in the Iberian Peninsula was printed in Catalan. + +Start of the modern era + +Spain +With the union of the crowns of Castille and Aragon in 1479, the Spanish kings ruled over different kingdoms, each with its own cultural, linguistic and political particularities, and they had to swear by the laws of each territory before the respective parliaments. But after the War of the Spanish Succession, Spain became an absolute monarchy under Philip V, which led to the assimilation of the Crown of Aragon by the Crown of Castile through the Nueva Planta decrees, as a first step in the creation of the Spanish nation-state; as in other contemporary European states, this meant the imposition of the political and cultural characteristics of the dominant groups. Since the political unification of 1714, Spanish assimilation policies towards national minorities have been a constant. + +The process of assimilation began with secret instructions to the corregidores of the Catalan territory: they "will take the utmost care to introduce the Castilian language, for which purpose he will give the most temperate and disguised measures so that the effect is achieved, without the care being noticed." From there, actions in the service of assimilation, discreet or aggressive, were continued, and reached to the last detail, such as, in 1799, the Royal Certificate forbidding anyone to "represent, sing and dance pieces that were not in Spanish." Anyway, the use of Spanish gradually became more prestigious and marked the start of the decline of Catalan. Starting in the 16th century, Catalan literature came under the influence of Spanish, and the nobles, part of the urban and literary classes became bilingual. + +France +With the Treaty of the Pyrenees (1659), Spain ceded the northern part of Catalonia to France, and soon thereafter the local Catalan varieties came under the influence of French, which in 1700 became the sole official language of the region. + +Shortly after the French Revolution (1789), the French First Republic prohibited official use of, and enacted discriminating policies against, the regional languages of France, such as Catalan, Alsatian, Breton, Occitan, Flemish, and Basque. + +France: 19th to 20th century + +Following the French establishment of the colony of Algeria from 1830 onward, it received several waves of Catalan-speaking settlers. People from the Spanish Alicante province settled around Oran, whereas Algiers received immigration from Northern Catalonia and Menorca. + +Their speech was known as patuet. By 1911, the number of Catalan speakers was around 100,000. After the declaration of independence of Algeria in 1962, almost all the Catalan speakers fled to Northern Catalonia (as Pieds-Noirs) or Alacant. + +The government of France formally recognizes only French as an official language. Nevertheless, on 10 December 2007, the General Council of the Pyrénées-Orientales officially recognized Catalan as one of the languages of the department and seeks to further promote it in public life and education. + +Spain: 18th to 20th century + +In 1807, the Statistics Office of the French Ministry of the Interior asked the prefects for an official survey on the limits of the French language. The survey found that in Roussillon, almost only Catalan was spoken, and since Napoleon wanted to incorporate Catalonia into France, as happened in 1812, the consul in Barcelona was also asked. He declared that Catalan "is taught in schools, it is printed and spoken, not only among the lower class, but also among people of first quality, also in social gatherings, as in visits and congresses", indicating that it was spoken everywhere "with the exception of the royal courts". He also indicated that Catalan was spoken "in the Kingdom of Valencia, in the islands of Mallorca, Menorca, Ibiza, Sardinia, Corsica and much of Sicily, in the Vall d "Aran and Cerdaña". + +The defeat of the pro-Habsburg coalition in the War of Spanish Succession (1714) initiated a series of laws which, among other centralizing measures, imposed the use of Spanish in legal documentation all over Spain. Because of this, use of the Catalan language declined into the 18th century. + +However, the 19th century saw a Catalan literary revival (), which has continued up to the present day. This period starts with Aribau's Ode to the Homeland (1833); followed in the second half of the 19th century, and the early 20th by the work of Verdaguer (poetry), Oller (realist novel), and Guimerà (drama). In the 19th century, the region of Carche, in the province of Murcia was repopulated with Valencian speakers. Catalan spelling was standardized in 1913 and the language became official during the Second Spanish Republic (1931–1939). The Second Spanish Republic saw a brief period of tolerance, with most restrictions against Catalan lifted. The Generalitat (the autonomous government of Catalonia, established during the Republic in 1931) made a normal use of Catalan in its administration and put efforts to promote it at social level, including in schools and the University of Barcelona. + +The Catalan language and culture were still vibrant during the Spanish Civil War (1936–1939), but were crushed at an unprecedented level throughout the subsequent decades due to Francoist dictatorship (1939–1975), which abolished the official status of Catalan and imposed the use of Spanish in schools and in public administration in all of Spain, while banning the use of Catalan in them. Between 1939 and 1943 newspapers and book printing in Catalan almost disappeared. Francisco Franco's desire for a homogenous Spanish population resonated with some Catalans in favor of his regime, primarily members of the upper class, who began to reject the use of Catalan. Despite all of these hardships, Catalan continued to be used privately within households, and it was able to survive Franco's dictatorship. At the end of World War II, however, some of the harsh mesures began to be lifted and, while Spanish language remained the sole promoted one, limited number of Catalan literature began to be tolerated. Several prominent Catalan authors resisted the suppression through literature. Private initiative contests were created to reward works in Catalan, among them Joan Martorell prize (1947), Víctor Català prize (1953) Carles Riba award (1950), or the Honor Award of Catalan Letters (1969). The first Catalan-language TV show was broadcast in 1964. At the same time, oppression of the Catalan language and identity was carried out in schools, through governmental bodies, and in religious centers. + +In addition to the loss of prestige for Catalan and its prohibition in schools, migration during the 1950s into Catalonia from other parts of Spain also contributed to the diminished use of the language. These migrants were often unaware of the existence of Catalan, and thus felt no need to learn or use it. Catalonia was the economic powerhouse of Spain, so these migrations continued to occur from all corners of the country. Employment opportunities were reduced for those who were not bilingual. Daily newspapers remained exclusively in Spanish until after Franco's death, when the first one in Catalan since the end of the Civil War, Avui, began to be published in 1976. + +Present day +Since the Spanish transition to democracy (1975–1982), Catalan has been institutionalized as an official language, language of education, and language of mass media; all of which have contributed to its increased prestige. In Catalonia, there is an unparalleled large bilingual European non-state linguistic community. The teaching of Catalan is mandatory in all schools, but it is possible to use Spanish for studying in the public education system of Catalonia in two situations – if the teacher assigned to a class chooses to use Spanish, or during the learning process of one or more recently arrived immigrant students. There is also some intergenerational shift towards Catalan. + +More recently, several Spanish political forces have tried to increase the use of Spanish in the Catalan educational system. As a result, in May 2022 the Spanish Supreme Court urged the Catalan regional government to enforce a measure by which 25% of all lessons must be taught in Spanish. + +According to the Statistical Institute of Catalonia, in 2013 the Catalan language is the second most commonly used in Catalonia, after Spanish, as a native or self-defining language: 7% of the population self-identifies with both Catalan and Spanish equally, 36.4% with Catalan and 47.5% only Spanish. In 2003 the same studies concluded no language preference for self-identification within the population above 15 years old: 5% self-identified with both languages, 44.3% with Catalan and 47.5% with Spanish. To promote use of Catalan, the Generalitat de Catalunya (Catalonia's official Autonomous government) spends part of its annual budget on the promotion of the use of Catalan in Catalonia and in other territories, with entities such as (Consortium for Linguistic Normalization) + +In Andorra, Catalan has always been the sole official language. Since the promulgation of the 1993 constitution, several policies favoring Catalan have been enforced, like Catalan medium education. + +On the other hand, there are several language shift processes currently taking place. In the Northern Catalonia area of France, Catalan has followed the same trend as the other minority languages of France, with most of its native speakers being 60 or older (as of 2004). Catalan is studied as a foreign language by 30% of the primary education students, and by 15% of the secondary. The cultural association promotes a network of community-run schools engaged in Catalan language immersion programs. + +In Alicante province, Catalan is being replaced by Spanish and in Alghero by Italian. There is also well ingrained diglossia in the Valencian Community, Ibiza, and to a lesser extent, in the rest of the Balearic islands. + +During the 20th century many Catalans emigrated or went into exile to Venezuela, Mexico, Cuba, Argentina, and other South American countries. They formed a large number of Catalan colonies that today continue to maintain the Catalan language. They also founded many Catalan casals (associations). + +Classification and relationship with other Romance languages + +One classification of Catalan is given by Pèire Bèc: + Romance languages + Italo-Western languages + Western Romance languages + Gallo-Iberian languages + Gallo-Romance languages + Occitano-Romance languages + Catalan language + +However, the ascription of Catalan to the Occitano-Romance branch of Gallo-Romance languages is not shared by all linguists and philologists, particularly among Spanish ones, such as Ramón Menéndez Pidal. + +Catalan bears varying degrees of similarity to the linguistic varieties subsumed under the cover term Occitan language (see also differences between Occitan and Catalan and Gallo-Romance languages). Thus, as it should be expected from closely related languages, Catalan today shares many traits with other Romance languages. + +Relationship with other Romance languages +Some include Catalan in Occitan, as the linguistic distance between this language and some Occitan dialects (such as the Gascon language) is similar to the distance among different Occitan dialects. Catalan was considered a dialect of Occitan until the end of the 19th century and still today remains its closest relative. + +Catalan shares many traits with the other neighboring Romance languages (Occitan, French, Italian, Sardinian as well as Spanish and Portuguese among others). However, despite being spoken mostly on the Iberian Peninsula, Catalan has marked differences with the Iberian Romance group (Spanish and Portuguese) in terms of pronunciation, grammar, and especially vocabulary; it shows instead its closest affinity with languages native to France and northern Italy, particularly Occitan and to a lesser extent Gallo-Romance (Franco-Provençal, French, Gallo-Italian). + +According to Ethnologue, the lexical similarity between Catalan and other Romance languages is: 87% with Italian; 85% with Portuguese and Spanish; 76% with Ladin and Romansh; 75% with Sardinian; and 73% with Romanian. + +During much of its history, and especially during the Francoist dictatorship (1939–1975), the Catalan language was ridiculed as a mere dialect of Spanish. This view, based on political and ideological considerations, has no linguistic validity. Spanish and Catalan have important differences in their sound systems, lexicon, and grammatical features, placing the language in features closer to Occitan (and French). + +There is evidence that, at least from the 2nd century , the vocabulary and phonology of Roman Tarraconensis was different from the rest of Roman Hispania. Differentiation arose generally because Spanish, Asturian, and Galician-Portuguese share certain peripheral archaisms (Spanish , Asturian and Portuguese vs. Catalan , Occitan "to boil") and innovatory regionalisms (Sp , Ast vs. Cat , Oc "bullock"), while Catalan has a shared history with the Western Romance innovative core, especially Occitan. + +Like all Romance languages, Catalan has a handful of native words which are unique to it, or rare elsewhere. These include: + verbs: 'to fasten; transfix' > 'to compose, write up', > 'to combine, conjugate', > 'to wake; awaken', 'to thicken; crowd together' > 'to save, keep', > 'to miss, yearn, pine for', 'to investigate, track' > Old Catalan enagar 'to incite, induce', > OCat ujar 'to exhaust, fatigue', > 'to appease, mollify', > 'to reject, refuse'; + nouns: > 'pomace', > 'reedmace', > 'catarrh', > 'snowdrift', > 'ardor, passion', > 'brake', > 'avalanche', > 'edge, border', 'sawfish' > pestriu > 'thresher shark, smooth hound; ray', 'live coal' > 'spark', > tardaó > 'autumn'. + +The Gothic superstrate produced different outcomes in Spanish and Catalan. For example, Catalan "mud" and "to roast", of Germanic origin, contrast with Spanish and , of Latin origin; whereas Catalan "spinning wheel" and "temple", of Latin origin, contrast with Spanish and , of Germanic origin. + +The same happens with Arabic loanwords. Thus, Catalan "large earthenware jar" and "tile", of Arabic origin, contrast with Spanish and , of Latin origin; whereas Catalan "oil" and "olive", of Latin origin, contrast with Spanish and . However, the Arabic element in Spanish is generally much more prevalent. + +Situated between two large linguistic blocks (Iberian Romance and Gallo-Romance), Catalan has many unique lexical choices, such as "to miss somebody", "to calm somebody down", and "reject". + +Geographic distribution + +Catalan-speaking territories + +Traditionally Catalan-speaking territories are sometimes called the (Catalan Countries), a denomination based on cultural affinity and common heritage, that has also had a subsequent political interpretation but no official status. Various interpretations of the term may include some or all of these regions. + +Number of speakers +The number of people known to be fluent in Catalan varies depending on the sources used. A 2004 study did not count the total number of speakers, but estimated a total of 9–9.5 million by matching the percentage of speakers to the population of each area where Catalan is spoken. The web site of the Generalitat de Catalunya estimated that as of 2004 there were 9,118,882 speakers of Catalan. These figures only reflect potential speakers; today it is the native language of only 35.6% of the Catalan population. According to Ethnologue, Catalan had 4.1 million native speakers and 5.1 million second-language speakers in 2021. + +According to a 2011 study the total number of Catalan speakers is over 9.8 million, with 5.9 million residing in Catalonia. More than half of them speak Catalan as a second language, with native speakers being about 4.4 million of those (more than 2.8 in Catalonia). Very few Catalan monoglots exist; basically, virtually all of the Catalan speakers in Spain are bilingual speakers of Catalan and Spanish, with a sizable population of Spanish-only speakers of immigrant origin (typically born outside Catalonia or whose parents were both born outside Catalonia) existing in the major Catalan urban areas as well. + +In Roussillon, only a minority of French Catalans speak Catalan nowadays, with French being the majority language for the inhabitants after a continued process of language shift. According to a 2019 survey by the Catalan government, 31.5% of the inhabitants of Catalonia have Catalan as first language at home whereas 52.7% have Spanish, 2.8% both Catalan and Spanish and 10.8% other languages. + +Spanish is the most spoken language in Barcelona (according to the linguistic census held by the Government of Catalonia in 2013) and it is understood almost universally. According to this census of 2013 Catalan is also very commonly spoken in the city of 1,501,262: it is understood by 95% of the population, while 72.3% over the age of 2 can speak it (1,137,816), 79% can read it (1,246.555), and 53% can write it (835,080). The proportion in Barcelona who can speak it, 72.3%, is lower than that of the overall Catalan population, of whom 81.2% over the age of 15 speak the language. Knowledge of Catalan has increased significantly in recent decades thanks to a language immersion educational system. An important social characteristic of the Catalan language is that all the areas where it is spoken are bilingual in practice: together with the French language in Roussillon, with Italian in Alghero, with Spanish and French in Andorra and with Spanish in the rest of the territories. + +1. The number of people who understand Catalan includes those who can speak it. +2. Figures relate to all self-declared capable speakers, not just native speakers. + +Level of knowledge + +(% of the population 15 years old and older). + +Social use + +(% of the population 15 years old and older). + +Native language + +Phonology + +Catalan phonology varies by dialect. Notable features include: + Marked contrast of the vowel pairs and , as in other Western Romance languages, other than Spanish. + Lack of diphthongization of Latin short , , as in Galician and Portuguese, but unlike French, Spanish, or Italian. + Abundance of diphthongs containing , as in Galician and Portuguese. + +In contrast to other Romance languages, Catalan has many monosyllabic words, and these may end in a wide variety of consonants, including some consonant clusters. Additionally, Catalan has final obstruent devoicing, which gives rise to an abundance of such couplets as ("male friend") vs. ("female friend"). + +Central Catalan pronunciation is considered to be standard for the language. The descriptions below are mostly representative of this variety. For the differences in pronunciation between the different dialects, see the section on pronunciation of dialects in this article. + +Vowels + +Catalan has inherited the typical vowel system of Vulgar Latin, with seven stressed phonemes: , a common feature in Western Romance, with the exception of Spanish. Balearic also has instances of stressed . Dialects differ in the different degrees of vowel reduction, and the incidence of the pair . + +In Central Catalan, unstressed vowels reduce to three: ; ; remains distinct. The other dialects have different vowel reduction processes (see the section pronunciation of dialects in this article). + +Consonants + +The consonant system of Catalan is rather conservative. + has a velarized allophone in syllable coda position in most dialects. However, is velarized irrespective of position in Eastern dialects like Majorcan and standard Eastern Catalan. + occurs in Balearic, Algherese, standard Valencian and some areas in southern Catalonia. It has merged with elsewhere. + Voiced obstruents undergo final-obstruent devoicing: . + Voiced stops become lenited to approximants in syllable onsets, after continuants: > , > , > . Exceptions include after lateral consonants, and after . In coda position, these sounds are realized as stops, except in some Valencian dialects where they are lenited. + There is some confusion in the literature about the precise phonetic characteristics of , , , . Some sources describe them as "postalveolar". Others as "back alveolo-palatal", implying that the characters would be more accurate. However, in all literature only the characters for palato-alveolar affricates and fricatives are used, even when the same sources use for other languages like Polish and Chinese. + The distribution of the two rhotics and closely parallels that of Spanish. Between vowels, the two contrast, but they are otherwise in complementary distribution: in the onset of the first syllable in a word, appears unless preceded by a consonant. Dialects vary in regards to rhotics in the coda with Western Catalan generally featuring and Central Catalan dialects featuring a weakly trilled unless it precedes a vowel-initial word in the same prosodic unit, in which case appears. + In careful speech, , , may be geminated. Geminated may also occur. Some analyze intervocalic as the result of gemination of a single rhotic phoneme. This is similar to the common analysis of Spanish and Portuguese rhotics. + +Phonological evolution + +Sociolinguistics +Catalan sociolinguistics studies the situation of Catalan in the world and the different varieties that this language presents. It is a subdiscipline of Catalan philology and other affine studies and has as an objective to analyze the relation between the Catalan language, the speakers and the close reality (including the one of other languages in contact). + +Preferential subjects of study + Dialects of Catalan + Variations of Catalan by class, gender, profession, age and level of studies + Process of linguistic normalization + Relations between Catalan and Spanish or French + Perception on the language of Catalan speakers and non-speakers + Presence of Catalan in several fields: tagging, public function, media, professional sectors + +Dialects + +Overview + +The dialects of the Catalan language feature a relative uniformity, especially when compared to other Romance languages; both in terms of vocabulary, semantics, syntax, morphology, and phonology. Mutual intelligibility between dialects is very high, estimates ranging from 90% to 95%. The only exception is the isolated idiosyncratic Algherese dialect. + +Catalan is split in two major dialectal blocks: Eastern and Western. The main difference lies in the treatment of unstressed and ; which have merged to in Eastern dialects, but which remain distinct as and in Western dialects. There are a few other differences in pronunciation, verbal morphology, and vocabulary. + +Western Catalan comprises the two dialects of Northwestern Catalan and Valencian; the Eastern block comprises four dialects: Central Catalan, Balearic, Rossellonese, and Algherese. Each dialect can be further subdivided in several subdialects. The terms "Catalan" and "Valencian" (respectively used in Catalonia and the Valencian Community) refer to two varieties of the same language. There are two institutions regulating the two standard varieties, the Institute of Catalan Studies in Catalonia and the Valencian Academy of the Language in the Valencian Community. + +Central Catalan is considered the standard pronunciation of the language and has the largest number of speakers. It is spoken in the densely populated regions of the Barcelona province, the eastern half of the province of Tarragona, and most of the province of Girona. + +Catalan has an inflectional grammar. Nouns have two genders (masculine, feminine), and two numbers (singular, plural). Pronouns additionally can have a neuter gender, and some are also inflected for case and politeness, and can be combined in very complex ways. Verbs are split in several paradigms and are inflected for person, number, tense, aspect, mood, and gender. In terms of pronunciation, Catalan has many words ending in a wide variety of consonants and some consonant clusters, in contrast with many other Romance languages. + +Pronunciation + +Vowels +Catalan has inherited the typical vowel system of Vulgar Latin, with seven stressed phonemes: , a common feature in Western Romance, except Spanish. Balearic has also instances of stressed . Dialects differ in the different degrees of vowel reduction, and the incidence of the pair . + +In Eastern Catalan (except Majorcan), unstressed vowels reduce to three: ; ; remains distinct. There are a few instances of unreduced , in some words. Algherese has lowered to . + +In Majorcan, unstressed vowels reduce to four: follow the Eastern Catalan reduction pattern; however reduce to , with remaining distinct, as in Western Catalan. + +In Western Catalan, unstressed vowels reduce to five: ; ; remain distinct. This reduction pattern, inherited from Proto-Romance, is also found in Italian and Portuguese. Some Western dialects present further reduction or vowel harmony in some cases. + +Central, Western, and Balearic differ in the lexical incidence of stressed and . Usually, words with in Central Catalan correspond to in Balearic and in Western Catalan. Words with in Balearic almost always have in Central and Western Catalan as well. As a result, Central Catalan has a much higher incidence of . + +Consonants + +Morphology +Western Catalan: In verbs, the ending for 1st-person present indicative is in verbs of the 1st conjugation and -∅ in verbs of the 2nd and 3rd conjugations in most of the Valencian Community, or in all verb conjugations in the Northern Valencian Community and Western Catalonia.E.g. , , (Valencian); , , (Northwestern Catalan). + +Eastern Catalan: In verbs, the ending for 1st-person present indicative is , , or -∅ in all conjugations. E.g. (Central), (Balearic), and (Northern), all meaning ('I speak'). + +Western Catalan: In verbs, the inchoative endings are /, , , /. + +Eastern Catalan: In verbs, the inchoative endings are , , , . + +Western Catalan: In nouns and adjectives, maintenance of of medieval plurals in proparoxytone words.E.g. 'men', 'youth'. + +Eastern Catalan: In nouns and adjectives, loss of of medieval plurals in proparoxytone words.E.g. 'men', 'youth' (Ibicencan, however, follows the model of Western Catalan in this case). + +Vocabulary +Despite its relative lexical unity, the two dialectal blocks of Catalan (Eastern and Western) show some differences in word choices. Any lexical divergence within any of the two groups can be explained as an archaism. Also, usually Central Catalan acts as an innovative element. + +Standards + +Standard Catalan, virtually accepted by all speakers, is mostly based on Eastern Catalan, which is the most widely used dialect. Nevertheless, the standards of the Valencian Community and the Balearics admit alternative forms, mostly traditional ones, which are not current in eastern Catalonia. + +The most notable difference between both standards is some tonic accentuation, for instance: (IEC) – (AVL). Nevertheless, AVL's standard keeps the grave accent , while pronouncing it as rather than , in some words like: ('what'), or . Other divergences include the use of (AVL) in some words instead of like in / ('almond'), / ('back'), the use of elided demonstratives ( 'this', 'that') in the same level as reinforced ones () or the use of many verbal forms common in Valencian, and some of these common in the rest of Western Catalan too, like subjunctive mood or inchoative conjugation in at the same level as or the priority use of morpheme in 1st person singular in present indicative ( verbs): instead of ('I buy'). + +In the Balearic Islands, IEC's standard is used but adapted for the Balearic dialect by the University of the Balearic Islands's philological section. In this way, for instance, IEC says it is correct writing as much as ('we sing'), but the university says that the priority form in the Balearic Islands must be in all fields. Another feature of the Balearic standard is the non-ending in the 1st person singular present indicative: ('I buy'), ('I fear'), ('I sleep'). + +In Alghero, the IEC has adapted its standard to the Algherese dialect of Sardinia. In this standard one can find, among other features: the definite article instead of , special possessive pronouns and determinants ('mine'), ('his/her'), ('yours'), and so on, the use of in the imperfect tense in all conjugations: , , ; the use of many archaic words, usual words in Algherese: instead of ('less'), instead of ('someone'), instead of ('which'), and so on; and the adaptation of weak pronouns. In 1999, Catalan (Algherese dialect) was among the twelve minority languages officially recognized as Italy's "historical linguistic minorities" by the Italian State under Law No. 482/1999. + +In 2011, the Aragonese government passed a decree approving the statutes of a new language regulator of Catalan in La Franja (the so-called Catalan-speaking areas of Aragon) as originally provided for by Law 10/2009. The new entity, designated as , shall allow a facultative education in Catalan and a standardization of the Catalan language in La Franja. + +Status of Valencian + +Valencian is classified as a Western dialect, along with the northwestern varieties spoken in Western Catalonia (provinces of Lleida and the western half of Tarragona). Central Catalan has 90% to 95% inherent intelligibility for speakers of Valencian. + +Linguists, including Valencian scholars, deal with Catalan and Valencian as the same language. The official regulating body of the language of the Valencian Community, the Valencian Academy of Language (Acadèmia Valenciana de la Llengua, AVL) declares the linguistic unity between Valencian and Catalan varieties. + +The AVL, created by the Valencian parliament, is in charge of dictating the official rules governing the use of Valencian, and its standard is based on the Norms of Castelló (Normes de Castelló). Currently, everyone who writes in Valencian uses this standard, except the Royal Academy of Valencian Culture (Acadèmia de Cultura Valenciana, RACV), which uses for Valencian an independent standard. + +Despite the position of the official organizations, an opinion poll carried out between 2001 and 2004 showed that the majority of the Valencian people consider Valencian different from Catalan. This position is promoted by people who do not use Valencian regularly. Furthermore, the data indicates that younger generations educated in Valencian are much less likely to hold these views. A minority of Valencian scholars active in fields other than linguistics defends the position of the Royal Academy of Valencian Culture (Acadèmia de Cultura Valenciana, RACV), which uses for Valencian a standard independent from Catalan. + +This clash of opinions has sparked much controversy. For example, during the drafting of the European Constitution in 2004, the Spanish government supplied the EU with translations of the text into Basque, Galician, Catalan, and Valencian, but the latter two were identical. + +Vocabulary + +Word choices +Despite its relative lexical unity, the two dialectal blocks of Catalan (Eastern and Western) show some differences in word choices. Any lexical divergence within any of the two groups can be explained as an archaism. Also, usually Central Catalan acts as an innovative element. + +Literary Catalan allows the use of words from different dialects, except those of very restricted use. However, from the 19th century onwards, there has been a tendency towards favoring words of Northern dialects to the detriment of others, + +Latin and Greek loanwords +Like other languages, Catalan has a large list of loanwords from Greek and Latin. This process started very early, and one can find such examples in Ramon Llull's work. In the 14th and 15th centuries Catalan had a far greater number of Greco-Latin loanwords than other Romance languages, as is attested for example in Roís de Corella's writings. The incorporation of learned, or "bookish" words from its own ancestor language, Latin, into Catalan is arguably another form of lexical borrowing through the influence of written language and the liturgical language of the Church. Throughout the Middle Ages and into the early modern period, most literate Catalan speakers were also literate in Latin; and thus they easily adopted Latin words into their writing—and eventually speech—in Catalan. + +Word formation +The process of morphological derivation in Catalan follows the same principles as the other Romance languages, where agglutination is common. Many times, several affixes are appended to a preexisting lexeme, and some sound alternations can occur, for example ("electrical") vs. . Prefixes are usually appended to verbs, as in ("foresee"). + +There is greater regularity in the process of word-compounding, where one can find compounded words formed much like those in English. + +Writing system + +Catalan uses the Latin script, with some added symbols and digraphs. The Catalan orthography is systematic and largely phonologically based. Standardization of Catalan was among the topics discussed during the First International Congress of the Catalan Language, held in Barcelona October 1906. Subsequently, the Philological Section of the Institut d'Estudis Catalans (IEC, founded in 1911) published the Normes ortogràfiques in 1913 under the direction of Antoni Maria Alcover and Pompeu Fabra. In 1932, Valencian writers and intellectuals gathered in Castelló de la Plana to make a formal adoption of the so-called Normes de Castelló, a set of guidelines following Pompeu Fabra's Catalan language norms. + +Grammar + +The grammar of Catalan is similar to other Romance languages. Features include: + Use of definite and indefinite articles. + Nouns, adjectives, pronouns, and articles are inflected for gender (masculine and feminine), and number (singular and plural). There is no case inflexion, except in pronouns. + Verbs are highly inflected for person, number, tense, aspect, and mood (including a subjunctive). + There are no modal auxiliaries. + Word order is freer than in English. + +Gender and number inflection + +In gender inflection, the most notable feature is (compared to Portuguese, Spanish or Italian), the loss of the typical masculine suffix . Thus, the alternance of /, has been replaced by ø/. There are only a few exceptions, like / ("scarce"). Many not completely predictable morphological alternations may occur, such as: + Affrication: / ("insane") vs. / ("ugly") + Loss of : / ("flat") vs. / ("second") + Final obstruent devoicing: / ("felt") vs. / ("said") + +Catalan has few suppletive couplets, like Italian and Spanish, and unlike French. Thus, Catalan has / ("boy"/"girl") and / ("cock"/"hen"), whereas French has / and /. + +There is a tendency to abandon traditionally gender-invariable adjectives in favor of marked ones, something prevalent in Occitan and French. Thus, one can find / ("boiling") in contrast with traditional /. + +As in the other Western Romance languages, the main plural expression is the suffix , which may create morphological alternations similar to the ones found in gender inflection, albeit more rarely. The most important one is the addition of before certain consonant groups, a phonetic phenomenon that does not affect feminine forms: / ("the pulse"/"the pulses") vs. / ("the dust"/"the dusts"). + +Determiners + +The inflection of determinatives is complex, specially because of the high number of elisions, but is similar to the neighboring languages. Catalan has more contractions of preposition + article than Spanish, like ("of + the [plural]"), but not as many as Italian (which has , , , etc.). + +Central Catalan has abandoned almost completely unstressed possessives (, etc.) in favor of constructions of article + stressed forms (, etc.), a feature shared with Italian. + +Personal pronouns + +The morphology of Catalan personal pronouns is complex, especially in unstressed forms, which are numerous (13 distinct forms, compared to 11 in Spanish or 9 in Italian). Features include the gender-neutral and the great degree of freedom when combining different unstressed pronouns (65 combinations). + +Catalan pronouns exhibit T–V distinction, like all other Romance languages (and most European languages, but not Modern English). This feature implies the use of a different set of second person pronouns for formality. + +This flexibility allows Catalan to use extraposition extensively, much more than French or Spanish. Thus, Catalan can have ("they recommended me to him"), whereas in French one must say , and Spanish . This allows the placement of almost any nominal term as a sentence topic, without having to use so often the passive voice (as in French or English), or identifying the direct object with a preposition (as in Spanish). + +Verbs + +Like all the Romance languages, Catalan verbal inflection is more complex than the nominal. Suffixation is omnipresent, whereas morphological alternations play a secondary role. Vowel alternances are active, as well as infixation and suppletion. However, these are not as productive as in Spanish, and are mostly restricted to irregular verbs. + +The Catalan verbal system is basically common to all Western Romance, except that most dialects have replaced the synthetic indicative perfect with a periphrastic form of ("to go") + infinitive. + +Catalan verbs are traditionally divided into three conjugations, with vowel themes , , , the last two being split into two subtypes. However, this division is mostly theoretical. Only the first conjugation is nowadays productive (with about 3500 common verbs), whereas the third (the subtype of , with about 700 common verbs) is semiproductive. The verbs of the second conjugation are fewer than 100, and it is not possible to create new ones, except by compounding. + +Syntax + +The grammar of Catalan follows the general pattern of Western Romance languages. The primary word order is subject–verb–object. However, word order is very flexible. Commonly, verb-subject constructions are used to achieve a semantic effect. The sentence "The train has arrived" could be translated as or . Both sentences mean "the train has arrived", but the former puts a focus on the train, while the latter puts a focus on the arrival. This subtle distinction is described as "what you might say while waiting in the station" versus "what you might say on the train." + +Catalan names + +In Spain, every person officially has two surnames, one of which is the father's first surname and the other is the mother's first surname. The law contemplates the possibility of joining both surnames with the Catalan conjunction i ("and"). + +Sample text +Selected text from Manuel de Pedrolo's 1970 novel ("A love affair outside the city"). + +See also + +Organizations + Institut d'Estudis Catalans (Catalan Studies Institute) + Acadèmia Valenciana de la Llengua (Valencian Academy of the Language) + Òmnium Cultural + Plataforma per la Llengua +Scholars + Marina Abràmova + Germà Colón + Dominique de Courcelles + Martí de Riquer + Arthur Terry + Lawrence Venuti +Other + Languages of Catalonia + Linguistic features of Spanish as spoken by Catalan speakers + Languages of France + Languages of Italy + Languages of Spain + Normes de Castelló + Pompeu Fabra + +Notes + +References + +Works cited + +External links + +Institutions + Consorci per a la Normalització Lingüística + Institut d'Estudis Catalans + Acadèmia Valenciana de la Llengua + +About the Catalan language + llengua.gencat.cat, by the Government of Catalonia + Gramàtica de la Llengua Catalana (Catalan grammar), from the Institute for Catalan Studies + Gramàtica Normativa Valenciana (2006, Valencian grammar), from the Acadèmia Valenciana de la Llengua + verbs.cat (Catalan verb conjugations with online trainers) + Catalan and its dialects + LEXDIALGRAM – online portal of 19th-century dialectal lexicographical and grammatical works of Catalan hosted by the University of Barcelona + +Monolingual dictionaries + DIEC2, from the Institut d'Estudis Catalans + Gran Diccionari de la Llengua Catalana , from Enciclopèdia Catalana + Diccionari Català-Valencià-Balear d'Alcover i Moll , from the Institut d'Estudis Catalans + Diccionari Normatiu Valencià (AVL), from the Acadèmia Valenciana de la Llengua + diccionarivalencia.com (online Valencian dictionary) + Diccionari Invers de la Llengua Catalana (dictionary of Catalan words spelled backwards) + +Bilingual and multilingual dictionaries + Diccionari de la Llengua Catalana Multilingüe (Catalan ↔ English, French, German and Spanish), from Enciclopèdia Catalana + DACCO – open source, collaborative dictionary (Catalan–English) + +Automated translation systems + Traductor automated, online translations of text and web pages (Catalan ↔ English, French and Spanish), from gencat.cat by the Government of Catalonia + +Phrasebooks + Catalan phrasebook on Wikivoyage + +Learning resources + Catalan Swadesh list of basic vocabulary words, from Wiktionary's Swadesh-list appendix + +Catalan-language online encyclopedia + Enciclopèdia Catalana + + +Subject–verb–object languages +Stress-timed languages +STS-51-F (also known as Spacelab 2) was the 19th flight of NASA's Space Shuttle program and the eighth flight of Space Shuttle Challenger. It launched from Kennedy Space Center, Florida, on July 29, 1985, and landed eight days later on August 6, 1985. + +While STS-51-F's primary payload was the Spacelab 2 laboratory module, the payload that received the most publicity was the Carbonated Beverage Dispenser Evaluation, which was an experiment in which both Coca-Cola and Pepsi tried to make their carbonated drinks available to astronauts. A helium-cooled infrared telescope (IRT) was also flown on this mission, and while it did have some problems, it observed 60% of the galactic plane in infrared light. + +During launch, Challenger experienced multiple sensor failures in its Engine 1 Center SSME engine, which led to it shutting down and the shuttle had to perform an "Abort to Orbit" (ATO) emergency procedure. It is the only Shuttle mission to have carried out an abort after launching. As a result of the ATO, the mission was carried out at a slightly lower orbital altitude. + +Crew + +Backup crew + +Crew seating arrangements + +Crew notes +As with previous Spacelab missions, the crew was divided between two 12-hour shifts. Acton, Bridges and Henize made up the "Red Team" while Bartoe, England and Musgrave comprised the "Blue Team"; commander Fullerton could take either shift when needed. Challenger carried two Extravehicular Mobility Units (EMU) in the event of an emergency spacewalk, which would have been performed by England and Musgrave. + +Launch + +STS-51-F's first launch attempt on July 12, 1985, was halted with the countdown at T−3 seconds after main engine ignition, when a malfunction of the number two RS-25 coolant valve caused an automatic launch abort. Challenger launched successfully on its second attempt on July 29, 1985, at 17:00 p.m. EDT, after a delay of 1 hour 37 minutes due to a problem with the table maintenance block update uplink. + +At 3 minutes 31 seconds into the ascent, one of the center engine's two high-pressure fuel turbopump turbine discharge temperature sensors failed. Two minutes and twelve seconds later, the second sensor failed, causing the shutdown of the center engine. This was the only in-flight RS-25 failure of the Space Shuttle program. Approximately 8 minutes into the flight, one of the same temperature sensors in the right engine failed, and the remaining right-engine temperature sensor displayed readings near the redline for engine shutdown. Booster Systems Engineer Jenny M. Howard acted quickly to recommend that the crew inhibit any further automatic RS-25 shutdowns based on readings from the remaining sensors, preventing the potential shutdown of a second engine and a possible abort mode that may have resulted in the loss of crew and vehicle (LOCV). + +The failed RS-25 resulted in an Abort to Orbit (ATO) trajectory, whereby the shuttle achieved a lower-than-planned orbital altitude. The plan had been for a by orbit, but the mission was carried out at by . + +Mission summary + +STS-51-F's primary payload was the laboratory module Spacelab 2. A special part of the modular Spacelab system, the "igloo", which was located at the head of a three-pallet train, provided on-site support to instruments mounted on pallets. The main mission objective was to verify performance of Spacelab systems, determine the interface capability of the orbiter, and measure the environment created by the spacecraft. Experiments covered life sciences, plasma physics, astronomy, high-energy astrophysics, solar physics, atmospheric physics and technology research. Despite mission replanning necessitated by Challengers abort to orbit trajectory, the Spacelab mission was declared a success. + +The flight marked the first time the European Space Agency (ESA) Instrument Pointing System (IPS) was tested in orbit. This unique pointing instrument was designed with an accuracy of one arcsecond. Initially, some problems were experienced when it was commanded to track the Sun, but a series of software fixes were made and the problem was corrected. In addition, Anthony W. England became the second amateur radio operator to transmit from space during the mission. + +Spacelab Infrared Telescope +The Spacelab Infrared Telescope (IRT) was also flown on the mission. The IRT was a aperture helium-cooled infrared telescope, observing light between wavelengths of 1.7 to 118 μm. It was thought heat emissions from the Shuttle corrupting long-wavelength data, but it still returned useful astronomical data. Another problem was that a piece of mylar insulation broke loose and floated in the line-of-sight of the telescope. IRT collected infrared data on 60% of the galactic plane. (see also List of largest infrared telescopes) A later space mission that experienced a stray light problem from debris was Gaia astrometry spacecraft launch in 2013 by the ESA - the source of the stray light was later identified as the fibers of the sunshield, protruding beyond the edges of the shield. + +Other payloads +The Plasma Diagnostics Package (PDP), which had been previously flown on STS-3, made its return on the mission, and was part of a set of plasma physics experiments designed to study the Earth's ionosphere. During the third day of the mission, it was grappled out of the payload bay by the Remote Manipulator System (Canadarm) and released for six hours. During this time, Challenger maneuvered around the PDP as part of a targeted proximity operations exercise. The PDP was successfully grappled by the Canadarm and returned to the payload bay at the beginning of the fourth day of the mission. + +In a heavily publicized marketing experiment, astronauts aboard STS-51-F drank carbonated beverages from specially designed cans from Cola Wars competitors Coca-Cola and Pepsi. According to Acton, after Coke developed its experimental dispenser for an earlier shuttle flight, Pepsi insisted to American president Ronald Reagan that Coke should not be the first cola in space. The experiment was delayed until Pepsi could develop its own system, and the two companies' products were assigned to STS-51-F. + +Blue Team tested Coke, and Red Team tested Pepsi. As part of the experiment, each team was photographed with the cola logo. Acton said that while the sophisticated Coke system "dispensed soda kind of like what we're used to drinking on Earth", the Pepsi can was a shaving cream can with the Pepsi logo on a paper wrapper, which "dispensed soda filled with bubbles" that was "not very drinkable". Acton said that when he gives speeches in schools, audiences are much more interested in hearing about the cola experiment than in solar physics. Post-flight, the astronauts revealed that they preferred Tang, in part because it could be mixed on-orbit with existing chilled-water supplies, whereas there was no dedicated refrigeration equipment on board to chill the cans, which also fizzed excessively in microgravity. + +In an experiment during the mission, thruster rockets were fired at a point over Tasmania and also above Boston to create two "holes" – plasma depletion regions – in the ionosphere. A worldwide group of geophysicists collaborated with the observations made from Spacelab 2. + +Landing +Challenger landed at Edwards Air Force Base, California, on August 6, 1985, at 12:45:26 p.m. PDT. Its rollout distance was . The mission had been extended by 17 orbits for additional payload activities due to the Abort to Orbit. The orbiter arrived back at Kennedy Space Center on August 11, 1985. + +Mission insignia +The mission insignia was designed by Houston, Texas artist Skip Bradley. is depicted ascending toward the heavens in search of new knowledge in the field of solar and stellar astronomy, with its Spacelab 2 payload. The constellations Leo and Orion are shown in the positions they were in relative to the Sun during the flight. The nineteen stars indicate that the mission is the 19th shuttle flight. + +Legacy +One of the purposes of the mission was to test how suitable the Shuttle was for conducting infrared observations, and the IRT was operated on this mission. However, the orbiter was found to have some draw-backs for infrared astronomy, and this led to later infrared telescopes being free-flying from the Shuttle orbiter. + +See also + + List of human spaceflights + List of Space Shuttle missions + Salyut 7 (a space station of the Soviet Union also in orbit at this time) + Soyuz T-13 (a mission to salvage that space station in the summer of 1985) + +References + +External links + + NASA mission summary + Press Kit + STS-51F Video Highlights + Space Coke can + Carbonated Drinks in Space + YouTube: STS-51F launch, abort and landing + July 12 launch attempt + Space Shuttle Missions Summary + +Space Shuttle missions +Edwards Air Force Base +1985 in spaceflight +1985 in the United States +Crewed space observatories +Spacecraft launched in 1985 +Spacecraft which reentered in 1985 +The Classical period was an era of classical music between roughly 1750 and 1820. + +The Classical period falls between the Baroque and the Romantic periods. Classical music has a lighter, clearer texture than Baroque music, but a more varying use of musical form, which is, in simpler terms, the rhythm and organization of any given piece of music. It is mainly homophonic, using a clear melody line over a subordinate chordal accompaniment, but counterpoint was by no means forgotten, especially in liturgical vocal music and, later in the period, secular instrumental music. It also makes use of style galant which emphasized light elegance in place of the Baroque's dignified seriousness and impressive grandeur. Variety and contrast within a piece became more pronounced than before and the orchestra increased in size, range, and power. + +The harpsichord was replaced as the main keyboard instrument by the piano (or fortepiano). Unlike the harpsichord, which plucks strings with quills, pianos strike the strings with leather-covered hammers when the keys are pressed, which enables the performer to play louder or softer (hence the original name "fortepiano," literally "loud soft") and play with more expression; in contrast, the force with which a performer plays the harpsichord keys does not change the sound. Instrumental music was considered important by Classical period composers. The main kinds of instrumental music were the sonata, trio, string quartet, quintet, symphony (performed by an orchestra) and the solo concerto, which featured a virtuoso solo performer playing a solo work for violin, piano, flute, or another instrument, accompanied by an orchestra. Vocal music, such as songs for a singer and piano (notably the work of Schubert), choral works, and opera (a staged dramatic work for singers and orchestra) were also important during this period. + +The best-known composers from this period are Joseph Haydn, Wolfgang Amadeus Mozart, Ludwig van Beethoven, and Franz Schubert; other names in this period include: Carl Philipp Emanuel Bach, Johann Christian Bach, Luigi Boccherini, Domenico Cimarosa, Joseph Martin Kraus, Muzio Clementi, Christoph Willibald Gluck, Carl Ditters von Dittersdorf, André Grétry, Pierre-Alexandre Monsigny, Leopold Mozart, Michael Haydn, Giovanni Paisiello, Johann Baptist Wanhal, François-André Danican Philidor, Niccolò Piccinni, Antonio Salieri, Etienne Nicolas Mehul, Georg Christoph Wagenseil, Georg Matthias Monn, Johann Gottlieb Graun, Carl Heinrich Graun, Franz Benda, Georg Anton Benda, Johann Georg Albrechtsberger, Mauro Giuliani, Christian Cannabich and the Chevalier de Saint-Georges. Beethoven is regarded either as a Romantic composer or a Classical period composer who was part of the transition to the Romantic era. Schubert is also a transitional figure, as were Johann Nepomuk Hummel, Luigi Cherubini, Gaspare Spontini, Gioachino Rossini, Carl Maria von Weber, John Field, Jan Ladislav Dussek and Niccolò Paganini. The period is sometimes referred to as the era of Viennese Classicism (), since Gluck, Haydn, Salieri, Mozart, Beethoven, and Schubert all worked in Vienna. + +Classicism + +In the middle of the 18th century, Europe began to move toward a new style in architecture, literature, and the arts, generally known as Neoclassicism. This style sought to emulate the ideals of Classical antiquity, especially those of Classical Greece. Classical music used formality and emphasis on order and hierarchy, and a "clearer", "cleaner" style that used clearer divisions between parts (notably a clear, single melody accompanied by chords), brighter contrasts and "tone colors" (achieved by the use of dynamic changes and modulations to more keys). In contrast with the richly layered music of the Baroque era, Classical music moved towards simplicity rather than complexity. In addition, the typical size of orchestras began to increase, giving orchestras a more powerful sound. + +The remarkable development of ideas in "natural philosophy" had already established itself in the public consciousness. In particular, Newton's physics was taken as a paradigm: structures should be well-founded in axioms and be both well-articulated and orderly. This taste for structural clarity began to affect music, which moved away from the layered polyphony of the Baroque period toward a style known as homophony, in which the melody is played over a subordinate harmony. This move meant that chords became a much more prevalent feature of music, even if they interrupted the melodic smoothness of a single part. As a result, the tonal structure of a piece of music became more audible. + +The new style was also encouraged by changes in the economic order and social structure. As the 18th century progressed well, the nobility became the primary patrons of instrumental music, while public taste increasingly preferred lighter, funny comic operas. This led to changes in the way music was performed, the most crucial of which was the move to standard instrumental groups and the reduction in the importance of the continuo—the rhythmic and harmonic groundwork of a piece of music, typically played by a keyboard (harpsichord or organ) and usually accompanied by a varied group of bass instruments, including cello, double bass, bass viol, and theorbo. One way to trace the decline of the continuo and its figured chords is to examine the disappearance of the term obbligato, meaning a mandatory instrumental part in a work of chamber music. In Baroque compositions, additional instruments could be added to the continuo group according to the group or leader's preference; in Classical compositions, all parts were specifically noted, though not always notated, so the term "obbligato" became redundant. By 1800, basso continuo was practically extinct, except for the occasional use of a pipe organ continuo part in a religious Mass in the early 1800s. + +Economic changes also had the effect of altering the balance of availability and quality of musicians. While in the late Baroque, a major composer would have the entire musical resources of a town to draw on, the musical forces available at an aristocratic hunting lodge or small court were smaller and more fixed in their level of ability. This was a spur to having simpler parts for ensemble musicians to play, and in the case of a resident virtuoso group, a spur to writing spectacular, idiomatic parts for certain instruments, as in the case of the Mannheim orchestra, or virtuoso solo parts for particularly skilled violinists or flautists. In addition, the appetite by audiences for a continual supply of new music carried over from the Baroque. This meant that works had to be performable with, at best, one or two rehearsals. Even after 1790 Mozart writes about "the rehearsal", with the implication that his concerts would have only one rehearsal. + +Since there was a greater emphasis on a single melodic line, there was greater emphasis on notating that line for dynamics and phrasing. This contrasts with the Baroque era, when melodies were typically written with no dynamics, phrasing marks or ornaments, as it was assumed that the performer would improvise these elements on the spot. In the Classical era, it became more common for composers to indicate where they wanted performers to play ornaments such as trills or turns. The simplification of texture made such instrumental detail more important, and also made the use of characteristic rhythms, such as attention-getting opening fanfares, the funeral march rhythm, or the minuet genre, more important in establishing and unifying the tone of a single movement. + +The Classical period also saw the gradual development of sonata form, a set of structural principles for music that reconciled the Classical preference for melodic material with harmonic development, which could be applied across musical genres. The sonata itself continued to be the principal form for solo and chamber music, while later in the Classical period the string quartet became a prominent genre. The symphony form for orchestra was created in this period (this is popularly attributed to Joseph Haydn). The concerto grosso (a concerto for more than one musician), a very popular form in the Baroque era, began to be replaced by the solo concerto, featuring only one soloist. Composers began to place more importance on the particular soloist's ability to show off virtuoso skills, with challenging, fast scale and arpeggio runs. Nonetheless, some concerti grossi remained, the most famous of which being Mozart's Sinfonia Concertante for Violin and Viola in E-flat major. + +Main characteristics + +In the classical period, the theme consists of phrases with contrasting melodic figures and rhythms. These phrases are relatively brief, typically four bars in length, and can occasionally seem sparse or terse. The texture is mainly homophonic, with a clear melody above a subordinate chordal accompaniment, for instance an Alberti bass. This contrasts with the practice in Baroque music, where a piece or movement would typically have only one musical subject, which would then be worked out in a number of voices according to the principles of counterpoint, while maintaining a consistent rhythm or metre throughout. As a result, Classical music tends to have a lighter, clearer texture than the Baroque. The classical style draws on the style galant, a musical style which emphasised light elegance in place of the Baroque's dignified seriousness and impressive grandeur. + +Structurally, Classical music generally has a clear musical form, with a well-defined contrast between tonic and dominant, introduced by clear cadences. Dynamics are used to highlight the structural characteristics of the piece. In particular, sonata form and its variants were developed during the early classical period and was frequently used. The Classical approach to structure again contrasts with the Baroque, where a composition would normally move between tonic and dominant and back again, but through a continual progress of chord changes and without a sense of "arrival" at the new key. While counterpoint was less emphasised in the classical period, it was by no means forgotten, especially later in the period, and composers still used counterpoint in "serious" works such as symphonies and string quartets, as well as religious pieces, such as Masses. + +The classical musical style was supported by technical developments in instruments. The widespread adoption of equal temperament made classical musical structure possible, by ensuring that cadences in all keys sounded similar. The fortepiano and then the pianoforte replaced the harpsichord, enabling more dynamic contrast and more sustained melodies. Over the Classical period, keyboard instruments became richer, more sonorous and more powerful. + +The orchestra increased in size and range, and became more standardised. The harpsichord or pipe organ basso continuo role in orchestra fell out of use between 1750 and 1775, leaving the string section. Woodwinds became a self-contained section, consisting of clarinets, oboes, flutes and bassoons. + +While vocal music such as comic opera was popular, great importance was given to instrumental music. The main kinds of instrumental music were the sonata, trio, string quartet, quintet, symphony, concerto (usually for a virtuoso solo instrument accompanied by orchestra), and light pieces such as serenades and divertimentos. Sonata form developed and became the most important form. It was used to build up the first movement of most large-scale works in symphonies and string quartets. Sonata form was also used in other movements and in single, standalone pieces such as overtures. + +History + +Baroque/Classical transition c. 1750–1760 + +In his book The Classical Style, author and pianist Charles Rosen claims that from 1755 to 1775, composers groped for a new style that was more effectively dramatic. In the High Baroque period, dramatic expression was limited to the representation of individual affects (the "doctrine of affections", or what Rosen terms "dramatic sentiment"). For example, in Handel's oratorio Jephtha, the composer renders four emotions separately, one for each character, in the quartet "O, spare your daughter". Eventually this depiction of individual emotions came to be seen as simplistic and unrealistic; composers sought to portray multiple emotions, simultaneously or progressively, within a single character or movement ("dramatic action"). Thus in the finale of act 2 of Mozart's Die Entführung aus dem Serail, the lovers move "from joy through suspicion and outrage to final reconciliation." + +Musically speaking, this "dramatic action" required more musical variety. Whereas Baroque music was characterized by seamless flow within individual movements and largely uniform textures, composers after the High Baroque sought to interrupt this flow with abrupt changes in texture, dynamic, harmony, or tempo. Among the stylistic developments which followed the High Baroque, the most dramatic came to be called Empfindsamkeit, (roughly "sensitive style"), and its best-known practitioner was Carl Philipp Emanuel Bach. Composers of this style employed the above-discussed interruptions in the most abrupt manner, and the music can sound illogical at times. The Italian composer Domenico Scarlatti took these developments further. His more than five hundred single-movement keyboard sonatas also contain abrupt changes of texture, but these changes are organized into periods, balanced phrases that became a hallmark of the classical style. However, Scarlatti's changes in texture still sound sudden and unprepared. The outstanding achievement of the great classical composers (Haydn, Mozart and Beethoven) was their ability to make these dramatic surprises sound logically motivated, so that "the expressive and the elegant could join hands." + +Between the death of J. S. Bach and the maturity of Haydn and Mozart (roughly 1750–1770), composers experimented with these new ideas, which can be seen in the music of Bach's sons. Johann Christian developed a style which we now call Roccoco, comprising simpler textures and harmonies, and which was "charming, undramatic, and a little empty." As mentioned previously, Carl Philipp Emmanuel sought to increase drama, and his music was "violent, expressive, brilliant, continuously surprising, and often incoherent." And finally Wilhelm Friedemann, J.S. Bach's eldest son, extended Baroque traditions in an idiomatic, unconventional way. + +At first the new style took over Baroque forms—the ternary da capo aria, the sinfonia and the concerto—but composed with simpler parts, more notated ornamentation, rather than the improvised ornaments that were common in the Baroque era, and more emphatic division of pieces into sections. However, over time, the new aesthetic caused radical changes in how pieces were put together, and the basic formal layouts changed. Composers from this period sought dramatic effects, striking melodies, and clearer textures. One of the big textural changes was a shift away from the complex, dense polyphonic style of the Baroque, in which multiple interweaving melodic lines were played simultaneously, and towards homophony, a lighter texture which uses a clear single melody line accompanied by chords. + +Baroque music generally uses many harmonic fantasies and polyphonic sections that focus less on the structure of the musical piece, and there was less emphasis on clear musical phrases. In the classical period, the harmonies became simpler. However, the structure of the piece, the phrases and small melodic or rhythmic motives, became much more important than in the Baroque period. + +Another important break with the past was the radical overhaul of opera by Christoph Willibald Gluck, who cut away a great deal of the layering and improvisational ornaments and focused on the points of modulation and transition. By making these moments where the harmony changes more of a focus, he enabled powerful dramatic shifts in the emotional color of the music. To highlight these transitions, he used changes in instrumentation (orchestration), melody, and mode. Among the most successful composers of his time, Gluck spawned many emulators, including Antonio Salieri. Their emphasis on accessibility brought huge successes in opera, and in other vocal music such as songs, oratorios, and choruses. These were considered the most important kinds of music for performance and hence enjoyed greatest public success. + +The phase between the Baroque and the rise of the Classical (around 1730), was home to various competing musical styles. The diversity of artistic paths are represented in the sons of Johann Sebastian Bach: Wilhelm Friedemann Bach, who continued the Baroque tradition in a personal way; Johann Christian Bach, who simplified textures of the Baroque and most clearly influenced Mozart; and Carl Philipp Emanuel Bach, who composed passionate and sometimes violently eccentric music of the Empfindsamkeit movement. Musical culture was caught at a crossroads: the masters of the older style had the technique, but the public hungered for the new. This is one of the reasons C. P. E. Bach was held in such high regard: he understood the older forms quite well and knew how to present them in new garb, with an enhanced variety of form. + +1750–1775 + +By the late 1750s there were flourishing centers of the new style in Italy, Vienna, Mannheim, and Paris; dozens of symphonies were composed and there were bands of players associated with musical theatres. Opera or other vocal music accompanied by orchestra was the feature of most musical events, with concertos and symphonies (arising from the overture) serving as instrumental interludes and introductions for operas and church services. Over the course of the Classical period, symphonies and concertos developed and were presented independently of vocal music. + +The "normal" orchestra ensemble—a body of strings supplemented by winds—and movements of particular rhythmic character were established by the late 1750s in Vienna. However, the length and weight of pieces was still set with some Baroque characteristics: individual movements still focused on one "affect" (musical mood) or had only one sharply contrasting middle section, and their length was not significantly greater than Baroque movements. There was not yet a clearly enunciated theory of how to compose in the new style. It was a moment ripe for a breakthrough. + +The first great master of the style was the composer Joseph Haydn. In the late 1750s he began composing symphonies, and by 1761 he had composed a triptych (Morning, Noon, and Evening) solidly in the contemporary mode. As a vice-Kapellmeister and later Kapellmeister, his output expanded: he composed over forty symphonies in the 1760s alone. And while his fame grew, as his orchestra was expanded and his compositions were copied and disseminated, his voice was only one among many. + +While some scholars suggest that Haydn was overshadowed by Mozart and Beethoven, it would be difficult to overstate Haydn's centrality to the new style, and therefore to the future of Western art music as a whole. At the time, before the pre-eminence of Mozart or Beethoven, and with Johann Sebastian Bach known primarily to connoisseurs of keyboard music, Haydn reached a place in music that set him above all other composers except perhaps the Baroque era's George Frideric Handel. Haydn took existing ideas, and radically altered how they functioned—earning him the titles "father of the symphony" and "father of the string quartet". + +One of the forces that worked as an impetus for his pressing forward was the first stirring of what would later be called Romanticism—the Sturm und Drang, or "storm and stress" phase in the arts, a short period where obvious and dramatic emotionalism was a stylistic preference. Haydn accordingly wanted more dramatic contrast and more emotionally appealing melodies, with sharpened character and individuality in his pieces. This period faded away in music and literature: however, it influenced what came afterward and would eventually be a component of aesthetic taste in later decades. + +The Farewell Symphony, No. 45 in F minor, exemplifies Haydn's integration of the differing demands of the new style, with surprising sharp turns and a long slow adagio to end the work. In 1772, Haydn completed his Opus 20 set of six string quartets, in which he deployed the polyphonic techniques he had gathered from the previous Baroque era to provide structural coherence capable of holding together his melodic ideas. For some, this marks the beginning of the "mature" Classical style, in which the period of reaction against late Baroque complexity yielded to a period of integration Baroque and Classical elements. + +1775–1790 + +Haydn, having worked for over a decade as the music director for a prince, had far more resources and scope for composing than most other composers. His position also gave him the ability to shape the forces that would play his music, as he could select skilled musicians. This opportunity was not wasted, as Haydn, beginning quite early on his career, sought to press forward the technique of building and developing ideas in his music. His next important breakthrough was in the Opus 33 string quartets (1781), in which the melodic and the harmonic roles segue among the instruments: it is often momentarily unclear what is melody and what is harmony. This changes the way the ensemble works its way between dramatic moments of transition and climactic sections: the music flows smoothly and without obvious interruption. He then took this integrated style and began applying it to orchestral and vocal music. + +Haydn's gift to music was a way of composing, a way of structuring works, which was at the same time in accord with the governing aesthetic of the new style. However, a younger contemporary, Wolfgang Amadeus Mozart, brought his genius to Haydn's ideas and applied them to two of the major genres of the day: opera, and the virtuoso concerto. Whereas Haydn spent much of his working life as a court composer, Mozart wanted public success in the concert life of cities, playing for the general public. This meant he needed to write operas and write and perform virtuoso pieces. Haydn was not a virtuoso at the international touring level; nor was he seeking to create operatic works that could play for many nights in front of a large audience. Mozart wanted to achieve both. Moreover, Mozart also had a taste for more chromatic chords (and greater contrasts in harmonic language generally), a greater love for creating a welter of melodies in a single work, and a more Italianate sensibility in music as a whole. He found, in Haydn's music and later in his study of the polyphony of J.S. Bach, the means to discipline and enrich his artistic gifts. + +Mozart rapidly came to the attention of Haydn, who hailed the new composer, studied his works, and considered the younger man his only true peer in music. In Mozart, Haydn found a greater range of instrumentation, dramatic effect and melodic resource. The learning relationship moved in both directions. Mozart also had a great respect for the older, more experienced composer, and sought to learn from him. + +Mozart's arrival in Vienna in 1780 brought an acceleration in the development of the Classical style. There, Mozart absorbed the fusion of Italianate brilliance and Germanic cohesiveness that had been brewing for the previous 20 years. His own taste for flashy brilliances, rhythmically complex melodies and figures, long cantilena melodies, and virtuoso flourishes was merged with an appreciation for formal coherence and internal connectedness. It is at this point that war and economic inflation halted a trend to larger orchestras and forced the disbanding or reduction of many theater orchestras. This pressed the Classical style inwards: toward seeking greater ensemble and technical challenges—for example, scattering the melody across woodwinds, or using a melody harmonized in thirds. This process placed a premium on small ensemble music, called chamber music. It also led to a trend for more public performance, giving a further boost to the string quartet and other small ensemble groupings. + +It was during this decade that public taste began, increasingly, to recognize that Haydn and Mozart had reached a high standard of composition. By the time Mozart arrived at age 25, in 1781, the dominant styles of Vienna were recognizably connected to the emergence in the 1750s of the early Classical style. By the end of the 1780s, changes in performance practice, the relative standing of instrumental and vocal music, technical demands on musicians, and stylistic unity had become established in the composers who imitated Mozart and Haydn. During this decade Mozart composed his most famous operas, his six late symphonies that helped to redefine the genre, and a string of piano concerti that still stand at the pinnacle of these forms. + +One composer who was influential in spreading the more serious style that Mozart and Haydn had formed is Muzio Clementi, a gifted virtuoso pianist who tied with Mozart in a musical "duel" before the emperor in which they each improvised on the piano and performed their compositions. Clementi's sonatas for the piano circulated widely, and he became the most successful composer in London during the 1780s. Also in London at this time was Jan Ladislav Dussek, who, like Clementi, encouraged piano makers to extend the range and other features of their instruments, and then fully exploited the newly opened up possibilities. The importance of London in the Classical period is often overlooked, but it served as the home to the Broadwood's factory for piano manufacturing and as the base for composers who, while less notable than the "Vienna School", had a decisive influence on what came later. They were composers of many fine works, notable in their own right. London's taste for virtuosity may well have encouraged the complex passage work and extended statements on tonic and dominant. + +Around 1790–1820 + +When Haydn and Mozart began composing, symphonies were played as single movements—before, between, or as interludes within other works—and many of them lasted only ten or twelve minutes; instrumental groups had varying standards of playing, and the continuo was a central part of music-making. + +In the intervening years, the social world of music had seen dramatic changes. International publication and touring had grown explosively, and concert societies formed. Notation became more specific, more descriptive—and schematics for works had been simplified (yet became more varied in their exact working out). In 1790, just before Mozart's death, with his reputation spreading rapidly, Haydn was poised for a series of successes, notably his late oratorios and London symphonies. Composers in Paris, Rome, and all over Germany turned to Haydn and Mozart for their ideas on form. + +In the 1790s, a new generation of composers, born around 1770, emerged. While they had grown up with the earlier styles, they heard in the recent works of Haydn and Mozart a vehicle for greater expression. In 1788 Luigi Cherubini settled in Paris and in 1791 composed Lodoiska, an opera that raised him to fame. Its style is clearly reflective of the mature Haydn and Mozart, and its instrumentation gave it a weight that had not yet been felt in the grand opera. His contemporary Étienne Méhul extended instrumental effects with his 1790 opera Euphrosine et Coradin, from which followed a series of successes. The final push towards change came from Gaspare Spontini, who was deeply admired by future romantic composers such as Weber, Berlioz and Wagner. The innovative harmonic language of his operas, their refined instrumentation and their "enchained" closed numbers (a structural pattern which was later adopted by Weber in Euryanthe and from him handed down, through Marschner, to Wagner), formed the basis from which French and German romantic opera had its beginnings. + +The most fateful of the new generation was Ludwig van Beethoven, who launched his numbered works in 1794 with a set of three piano trios, which remain in the repertoire. Somewhat younger than the others, though equally accomplished because of his youthful study under Mozart and his native virtuosity, was Johann Nepomuk Hummel. Hummel studied under Haydn as well; he was a friend to Beethoven and Franz Schubert. He concentrated more on the piano than any other instrument, and his time in London in 1791 and 1792 generated the composition and publication in 1793 of three piano sonatas, opus 2, which idiomatically used Mozart's techniques of avoiding the expected cadence, and Clementi's sometimes modally uncertain virtuoso figuration. Taken together, these composers can be seen as the vanguard of a broad change in style and the center of music. They studied one another's works, copied one another's gestures in music, and on occasion behaved like quarrelsome rivals. + +The crucial differences with the previous wave can be seen in the downward shift in melodies, increasing durations of movements, the acceptance of Mozart and Haydn as paradigmatic, the greater use of keyboard resources, the shift from "vocal" writing to "pianistic" writing, the growing pull of the minor and of modal ambiguity, and the increasing importance of varying accompanying figures to bring "texture" forward as an element in music. In short, the late Classical was seeking music that was internally more complex. The growth of concert societies and amateur orchestras, marking the importance of music as part of middle-class life, contributed to a booming market for pianos, piano music, and virtuosi to serve as exemplars. Hummel, Beethoven, and Clementi were all renowned for their improvising. + +The direct influence of the Baroque continued to fade: the figured bass grew less prominent as a means of holding performance together, the performance practices of the mid-18th century continued to die out. However, at the same time, complete editions of Baroque masters began to become available, and the influence of Baroque style continued to grow, particularly in the ever more expansive use of brass. Another feature of the period is the growing number of performances where the composer was not present. This led to increased detail and specificity in notation; for example, there were fewer "optional" parts that stood separately from the main score. + +The force of these shifts became apparent with Beethoven's 3rd Symphony, given the name Eroica, which is Italian for "heroic", by the composer. As with Stravinsky's The Rite of Spring, it may not have been the first in all of its innovations, but its aggressive use of every part of the Classical style set it apart from its contemporary works: in length, ambition, and harmonic resources as well making it the first symphony of the Romantic era. + +First Viennese School + +The First Viennese School is a name mostly used to refer to three composers of the Classical period in late-18th-century Vienna: Haydn, Mozart, and Beethoven. Franz Schubert is occasionally added to the list. + +In German-speaking countries, the term Wiener Klassik (lit. Viennese classical era/art) is used. That term is often more broadly applied to the Classical era in music as a whole, as a means to distinguish it from other periods that are colloquially referred to as classical, namely Baroque and Romantic music. + +The term "Viennese School" was first used by Austrian musicologist Raphael Georg Kiesewetter in 1834, although he only counted Haydn and Mozart as members of the school. Other writers followed suit, and eventually Beethoven was added to the list. The designation "first" is added today to avoid confusion with the Second Viennese School. + +Whilst, Schubert apart, these composers certainly knew each other (with Haydn and Mozart even being occasional chamber-music partners), there is no sense in which they were engaged in a collaborative effort in the sense that one would associate with 20th-century schools such as the Second Viennese School, or Les Six. Nor is there any significant sense in which one composer was "schooled" by another (in the way that Berg and Webern were taught by Schoenberg), though it is true that Beethoven for a time received lessons from Haydn. + +Attempts to extend the First Viennese School to include such later figures as Anton Bruckner, Johannes Brahms, and Gustav Mahler are merely journalistic, and never encountered in academic musicology. + +Classical influence on later composers + +Musical eras and their prevalent styles, forms and instruments seldom disappear at once; instead, features are replaced over time, until the old approach is simply felt as "old-fashioned". The Classical style did not "die" suddenly; rather, it gradually got phased out under the weight of changes. To give just one example, while it is generally stated that the Classical era stopped using the harpsichord in orchestras, this did not happen all of a sudden at the start of the Classical era in 1750. Rather, orchestras slowly stopped using the harpsichord to play basso continuo until the practice was discontinued by the end of the 1700s. + +One crucial change was the shift towards harmonies centering on "flatward" keys: shifts in the subdominant direction . In the Classical style, major key was far more common than minor, chromaticism being moderated through the use of "sharpward" modulation (e.g., a piece in C major modulating to G major, D major, or A major, all of which are keys with more sharps). As well, sections in the minor mode were often used for contrast. Beginning with Mozart and Clementi, there began a creeping colonization of the subdominant region (the ii or IV chord, which in the key of C major would be the keys of d minor or F major). With Schubert, subdominant modulations flourished after being introduced in contexts in which earlier composers would have confined themselves to dominant shifts (modulations to the dominant chord, e.g., in the key of C major, modulating to G major). This introduced darker colors to music, strengthened the minor mode, and made structure harder to maintain. Beethoven contributed to this by his increasing use of the fourth as a consonance, and modal ambiguity—for example, the opening of the Symphony No. 9 in D minor. + +Ludwig van Beethoven, Franz Schubert, Carl Maria von Weber, Johann Nepomuk Hummel, and John Field are among the most prominent in this generation of "Proto-Romantics", along with the young Felix Mendelssohn. Their sense of form was strongly influenced by the Classical style. While they were not yet "learned" composers (imitating rules which were codified by others), they directly responded to works by Haydn, Mozart, Clementi, and others, as they encountered them. The instrumental forces at their disposal in orchestras were also quite "Classical" in number and variety, permitting similarity with Classical works. + +However, the forces destined to end the hold of the Classical style gathered strength in the works of many of the above composers, particularly Beethoven. The most commonly cited one is harmonic innovation. Also important is the increasing focus on having a continuous and rhythmically uniform accompanying figuration: Beethoven's Moonlight Sonata was the model for hundreds of later pieces—where the shifting movement of a rhythmic figure provides much of the drama and interest of the work, while a melody drifts above it. Greater knowledge of works, greater instrumental expertise, increasing variety of instruments, the growth of concert societies, and the unstoppable domination of the increasingly more powerful piano (which was given a bolder, louder tone by technological developments such as the use of steel strings, heavy cast-iron frames and sympathetically vibrating strings) all created a huge audience for sophisticated music. All of these trends contributed to the shift to the "Romantic" style. + +Drawing the line between these two styles is very difficult: some sections of Mozart's later works, taken alone, are indistinguishable in harmony and orchestration from music written 80 years later—and some composers continued to write in normative Classical styles into the early 20th century. Even before Beethoven's death, composers such as Louis Spohr were self-described Romantics, incorporating, for example, more extravagant chromaticism in their works (e.g., using chromatic harmonies in a piece's chord progression). Conversely, works such as Schubert's Symphony No. 5, written during the chronological end of the Classical era and dawn of the Romantic era, exhibit a deliberately anachronistic artistic paradigm, harking back to the compositional style of several decades before. + +However, Vienna's fall as the most important musical center for orchestral composition during the late 1820s, precipitated by the deaths of Beethoven and Schubert, marked the Classical style's final eclipse—and the end of its continuous organic development of one composer learning in close proximity to others. Franz Liszt and Frédéric Chopin visited Vienna when they were young, but they then moved on to other cities. Composers such as Carl Czerny, while deeply influenced by Beethoven, also searched for new ideas and new forms to contain the larger world of musical expression and performance in which they lived. + +Renewed interest in the formal balance and restraint of 18th century classical music led in the early 20th century to the development of so-called Neoclassical style, which numbered Stravinsky and Prokofiev among its proponents, at least at certain times in their careers. + +Classical period instruments + +Guitar +The Baroque guitar, with four or five sets of double strings or "courses" and elaborately decorated soundhole, was a very different instrument from the early classical guitar which more closely resembles the modern instrument with the standard six strings. Judging by the number of instructional manuals published for the instrument – over three hundred texts were published by over two hundred authors between 1760 and 1860 – the classical period marked a golden age for guitar. + +Strings +In the Baroque era, there was more variety in the bowed stringed instruments used in ensembles, with instruments such as the viola d'amore and a range of fretted viols being used, ranging from small viols to large bass viols. In the Classical period, the string section of the orchestra was standardized as just four instruments: + + Violin (in orchestras and chamber music, typically there are first violins and second violins, with the former playing the melody and/or a higher line and the latter playing either a countermelody, a harmony part, a part below the first violin line in pitch, or an accompaniment line) + Viola (the alto voice of the orchestral string section and string quartet; it often performs "inner voices", which are accompaniment lines which fill in the harmony of the piece) + Cello (the cello plays two roles in Classical era music; at times it is used to play the bassline of the piece, typically doubled by the double basses [Note: When cellos and double basses read the same bassline, the basses play an octave below the cellos, because the bass is a transposing instrument]; and at other times it performs melodies and solos in the lower register) + Double bass (the bass typically performs the lowest pitches in the string section in order to provide the bassline for the piece) + +In the Baroque era, the double bass players were not usually given a separate part; instead, they typically played the same basso continuo bassline that the cellos and other low-pitched instruments (e.g., theorbo, serpent wind instrument, viols), albeit an octave below the cellos, because the double bass is a transposing instrument that sounds one octave lower than it is written. In the Classical era, some composers continued to write only one bass part for their symphony, labeled "bassi"; this bass part was played by cellists and double bassists. During the Classical era, some composers began to give the double basses their own part. + +Woodwinds +It was commonplace for all orchestras to have at least 2 winds, usually oboes, flutes, clarinets, or sometimes english horns (see Symphony No. 22 (Haydn). Patrons also usually employed an ensemble of entirely winds, called the harmonie, which would be employed for certain events. The harmonie would join the larger string orchestra sometimes to serve as the wind section. + Piccolo (used in military bands) + Flute + Oboe + English horn + Clarinet + Basset horn + Basset Clarinet + Clarinette d'amour + Bassoon + Contrabassoon + Bagpipe (see Leopold Mozart's divertimento, "Die Bauernhochzeit" or "Peasant Wedding") + +Percussion + Timpani + "Turkish music": +Bass drum +Cymbals +Triangle + Tambourine + +Keyboards + Clavichord + Fortepiano (the forerunner to the modern piano) + Harpsichord, the standard Baroque era basso continuo keyboard instrument, was used until the 1750s, after which time it was gradually phased out, and replaced with the fortepiano and then the piano. By the early 1800s, the harpsichord was no longer used. + Organ + +Brasses + + Natural horn + Natural trumpet + Sackbut (Trombone precursor) + Serpent (instrument) + Post horn (see Serenade No. 9 (Mozart)) + +See also + List of Classical-era composers + +Notes + +Further reading + Downs, Philip G. (1992). Classical Music: The Era of Haydn, Mozart, and Beethoven, 4th vol of Norton Introduction to Music History. W. W. Norton. (hardcover). + Grout, Donald Jay; Palisca, Claude V. (1996). A History of Western Music, Fifth Edition. W. W. Norton. (hardcover). + Hanning, Barbara Russano; Grout, Donald Jay (1998 rev. 2006). Concise History of Western Music. W. W. Norton. (hardcover). + Kennedy, Michael (2006), The Oxford Dictionary of Music, 985 pages, + Lihoreau, Tim; Fry, Stephen (2004). Stephen Fry's Incomplete and Utter History of Classical Music. Boxtree. + Rosen, Charles (1972 expanded 1997). The Classical Style. New York: W. W. Norton. (expanded edition with CD, 1997) + Taruskin, Richard (2005, rev. Paperback version 2009). Oxford History of Western Music. Oxford University Press (US). (Hardback), (Paperback) + +External links + + Classical Net – Classical music reference site +Character encoding is the process of assigning numbers to graphical characters, especially the written characters of human language, allowing them to be stored, transmitted, and transformed using digital computers. The numerical values that make up a character encoding are known as "code points" and collectively comprise a "code space", a "code page", or a "character map". + +Early character codes associated with the optical or electrical telegraph could only represent a subset of the characters used in written languages, sometimes restricted to upper case letters, numerals and some punctuation only. The low cost of digital representation of data in modern computer systems allows more elaborate character codes (such as Unicode) which represent most of the characters used in many written languages. Character encoding using internationally accepted standards permits worldwide interchange of text in electronic form. + +History +The history of character codes illustrates the evolving need for machine-mediated character-based symbolic information over a distance, using once-novel electrical means. The earliest codes were based upon manual and hand-written encoding and cyphering systems, such as Bacon's cipher, Braille, international maritime signal flags, and the 4-digit encoding of Chinese characters for a Chinese telegraph code (Hans Schjellerup, 1869). With the adoption of electrical and electro-mechanical techniques these earliest codes were adapted to the new capabilities and limitations of the early machines. The earliest well-known electrically transmitted character code, Morse code, introduced in the 1840s, used a system of four "symbols" (short signal, long signal, short space, long space) to generate codes of variable length. Though some commercial use of Morse code was via machinery, it was often used as a manual code, generated by hand on a telegraph key and decipherable by ear, and persists in amateur radio and aeronautical use. Most codes are of fixed per-character length or variable-length sequences of fixed-length codes (e.g. Unicode). + +Common examples of character encoding systems include Morse code, the Baudot code, the American Standard Code for Information Interchange (ASCII) and Unicode. Unicode, a well-defined and extensible encoding system, has supplanted most earlier character encodings, but the path of code development to the present is fairly well known. + +The Baudot code, a five-bit encoding, was created by Émile Baudot in 1870, patented in 1874, modified by Donald Murray in 1901, and standardized by CCITT as International Telegraph Alphabet No. 2 (ITA2) in 1930. The name baudot has been erroneously applied to ITA2 and its many variants. ITA2 suffered from many shortcomings and was often improved by many equipment manufacturers, sometimes creating compatibility issues. In 1959 the U.S. military defined its Fieldata code, a six-or seven-bit code, introduced by the U.S. Army Signal Corps. While Fieldata addressed many of the then-modern issues (e.g. letter and digit codes arranged for machine collation), it fell short of its goals and was short-lived. In 1963 the first ASCII code was released (X3.4-1963) by the ASCII committee (which contained at least one member of the Fieldata committee, W. F. Leubbert), which addressed most of the shortcomings of Fieldata, using a simpler code. Many of the changes were subtle, such as collatable character sets within certain numeric ranges. ASCII63 was a success, widely adopted by industry, and with the follow-up issue of the 1967 ASCII code (which added lower-case letters and fixed some "control code" issues) ASCII67 was adopted fairly widely. ASCII67's American-centric nature was somewhat addressed in the European ECMA-6 standard. + +Herman Hollerith invented punch card data encoding in the late 19th century to analyze census data. Initially, each hole position represented a different data element, but later, numeric information was encoded by numbering the lower rows 0 to 9, with a punch in a column representing its row number. Later alphabetic data was encoded by allowing more than one punch per column. Electromechanical tabulating machines represented date internally by the timing of pulses relative to the motion of the cards through the machine. When IBM went to electronic processing, starting with the IBM 603 Electronic Multiplier, it used a variety of binary encoding schemes that were tied to the punch card code. + +IBM's Binary Coded Decimal (BCD) was a six-bit encoding scheme used by IBM as early as 1953 in its 702 and 704 computers, and in its later 7000 Series and 1400 series, as well as in associated peripherals. Since the punched card code then in use only allowed digits, upper-case English letters and a few special characters, six bits were sufficient. BCD extended existing simple four-bit numeric encoding to include alphabetic and special characters, mapping it easily to punch-card encoding which was already in widespread use. IBMs codes were used primarily with IBM equipment; other computer vendors of the era had their own character codes, often six-bit, but usually had the ability to read tapes produced on IBM equipment. BCD was the precursor of IBM's Extended Binary-Coded Decimal Interchange Code (usually abbreviated as EBCDIC), an eight-bit encoding scheme developed in 1963 for the IBM System/360 that featured a larger character set, including lower case letters. + +In trying to develop universally interchangeable character encodings, researchers in the 1980s faced the dilemma that, on the one hand, it seemed necessary to add more bits to accommodate additional characters, but on the other hand, for the users of the relatively small character set of the Latin alphabet (who still constituted the majority of computer users), those additional bits were a colossal waste of then-scarce and expensive computing resources (as they would always be zeroed out for such users). In 1985, the average personal computer user's hard disk drive could store only about 10 megabytes, and it cost approximately US$250 on the wholesale market (and much higher if purchased separately at retail), so it was very important at the time to make every bit count. + +The compromise solution that was eventually found and was to break the assumption (dating back to telegraph codes) that each character should always directly correspond to a particular sequence of bits. Instead, characters would first be mapped to a universal intermediate representation in the form of abstract numbers called code points. Code points would then be represented in a variety of ways and with various default numbers of bits per character (code units) depending on context. To encode code points higher than the length of the code unit, such as above 256 for eight-bit units, the solution was to implement variable-length encodings where an escape sequence would signal that subsequent bits should be parsed as a higher code point. + +Terminology +Informally, the terms "character encoding", "character map", "character set" and "code page" are often used interchangeably. Historically, the same standard would specify a repertoire of characters and how they were to be encoded into a stream of code units — usually with a single character per code unit. However, due to the emergence of more sophisticated character encodings, the distinction between these terms has become important. + + A character is a minimal unit of text that has semantic value. + A character set is a collection of elements used to represent text. For example, the Latin alphabet and Greek alphabet are both character sets. + A coded character set is a character set mapped to set of unique numbers. For historical reasons, this is also often referred to as a code page. + A character repertoire is the set of characters that can be represented by a particular coded character set. The repertoire may be closed, meaning that no additions are allowed without creating a new standard (as is the case with ASCII and most of the ISO-8859 series); or it may be open, allowing additions (as is the case with Unicode and to a limited extent Windows code pages). + A code point is a value or position of a character in a coded character set. + A code space is the range of numerical values spanned by a coded character set. + A code unit is the minimum bit combination that can represent a character in a character encoding (in computer science terms, it is the word size of the character encoding). For example, common code units include 7-bit, 8-bit, 16-bit, and 32-bit. In some encodings, some characters are encoded using multiple code units; such an encoding is referred to as a variable-width encoding. + +Code pages + +"Code page" is a historical name for a coded character set. + +Originally, a code page referred to a specific page number in the IBM standard character set manual, which would define a particular character encoding. Other vendors, including Microsoft, SAP, and Oracle Corporation, also published their own sets of code pages; the most well-known code page suites are "Windows" (based on Windows-1252) and "IBM"/"DOS" (based on code page 437). + +Despite no longer referring to specific page numbers in a standard, many character encodings are still referred to by their code page number; likewise, the term "code page" is often still used to refer to character encodings in general. + +The term "code page" is not used in Unix or Linux, where "charmap" is preferred, usually in the larger context of locales. IBM's Character Data Representation Architecture (CDRA) designates entities with coded character set identifiers (CCSIDs), each of which is variously called a "charset", "character set", "code page", or "CHARMAP". + +Code units +The code unit size is equivalent to the bit measurement for the particular encoding: + A code unit in US-ASCII consists of 7 bits; + A code unit in UTF-8, EBCDIC and GB 18030 consists of 8 bits; + A code unit in UTF-16 consists of 16 bits; + A code unit in UTF-32 consists of 32 bits. + +Code points +A code point is represented by a sequence of code units. The mapping is defined by the encoding. Thus, the number of code units required to represent a code point depends on the encoding: + UTF-8: code points map to a sequence of one, two, three or four code units. + UTF-16: code units are twice as long as 8-bit code units. Therefore, any code point with a scalar value less than U+10000 is encoded with a single code unit. Code points with a value U+10000 or higher require two code units each. These pairs of code units have a unique term in UTF-16: "Unicode surrogate pairs". + UTF-32: the 32-bit code unit is large enough that every code point is represented as a single code unit. + GB 18030: multiple code units per code point are common, because of the small code units. Code points are mapped to one, two, or four code units. + +Characters + +Exactly what constitutes a character varies between character encodings. + +For example, for letters with diacritics, there are two distinct approaches that can be taken to encode them: they can be encoded either as a single unified character (known as a precomposed character), or as separate characters that combine into a single glyph. The former simplifies the text handling system, but the latter allows any letter/diacritic combination to be used in text. Ligatures pose similar problems. + +Exactly how to handle glyph variants is a choice that must be made when constructing a particular character encoding. Some writing systems, such as Arabic and Hebrew, need to accommodate things like graphemes that are joined in different ways in different contexts, but represent the same semantic character. + +Unicode encoding model +Unicode and its parallel standard, the ISO/IEC 10646 Universal Character Set, together constitute a unified standard for character encoding. Rather than mapping characters directly to bytes, Unicode separately defines a coded character set that maps characters to unique natural numbers (code points), how those code points are mapped to a series of fixed-size natural numbers (code units), and finally how those units are encoded as a stream of octets (bytes). The purpose of this decomposition is to establish a universal set of characters that can be encoded in a variety of ways. To describe this model precisely, Unicode uses its own set of terminology to describe its process: + +An abstract character repertoire (ACR) is the full set of abstract characters that a system supports. Unicode has an open repertoire, meaning that new characters will be added to the repertoire over time. + +A coded character set (CCS) is a function that maps characters to code points (each code point represents one character). For example, in a given repertoire, the capital letter "A" in the Latin alphabet might be represented by the code point 65, the character "B" by 66, and so on. Multiple coded character sets may share the same character repertoire; for example ISO/IEC 8859-1 and IBM code pages 037 and 500 all cover the same repertoire but map them to different code points. + +A character encoding form (CEF) is the mapping of code points to code units to facilitate storage in a system that represents numbers as bit sequences of fixed length (i.e. practically any computer system). For example, a system that stores numeric information in 16-bit units can only directly represent code points 0 to 65,535 in each unit, but larger code points (say, 65,536 to 1.4 million) could be represented by using multiple 16-bit units. This correspondence is defined by a CEF. + +A character encoding scheme (CES) is the mapping of code units to a sequence of octets to facilitate storage on an octet-based file system or transmission over an octet-based network. Simple character encoding schemes include UTF-8, UTF-16BE, UTF-32BE, UTF-16LE, and UTF-32LE; compound character encoding schemes, such as UTF-16, UTF-32 and ISO/IEC 2022, switch between several simple schemes by using a byte order mark or escape sequences; compressing schemes try to minimize the number of bytes used per code unit (such as SCSU and BOCU). + +Although UTF-32BE and UTF-32LE are simpler CESes, most systems working with Unicode use either UTF-8, which is backward compatible with fixed-length ASCII and maps Unicode code points to variable-length sequences of octets, or UTF-16BE, which is backward compatible with fixed-length UCS-2BE and maps Unicode code points to variable-length sequences of 16-bit words. See comparison of Unicode encodings for a detailed discussion. + +Finally, there may be a higher-level protocol which supplies additional information to select the particular variant of a Unicode character, particularly where there are regional variants that have been 'unified' in Unicode as the same character. An example is the XML attribute xml:lang. + +The Unicode model uses the term "character map" for other systems which directly assign a sequence of characters to a sequence of bytes, covering all of the CCS, CEF and CES layers. + +Unicode code points +In Unicode, a character can be referred to as 'U+' followed by its codepoint value in hexadecimal. The range of valid code points (the codespace) for the Unicode standard is U+0000 to U+10FFFF, inclusive, divided in 17 planes, identified by the numbers 0 to 16. Characters in the range U+0000 to U+FFFF are in plane 0, called the Basic Multilingual Plane (BMP). This plane contains most commonly-used characters. Characters in the range U+10000 to U+10FFFF in the other planes are called supplementary characters. + +The following table shows examples of code point values: + +Example +Consider a string of the letters "ab̲c𐐀"—that is, a string containing a Unicode combining character () as well a supplementary character (). This string has several Unicode representations which are logically equivalent, yet while each is suited to a diverse set of circumstances or range of requirements: + Four composed characters: +, , , + Five graphemes: +, , , , + Five Unicode code points: +, , , , + Five UTF-32 code units (32-bit integer values): +, , , , + Six UTF-16 code units (16-bit integers) +, , , , , + Nine UTF-8 code units (8-bit values, or bytes) +, , , , , , , , + +Note in particular that 𐐀 is represented with either one 32-bit value (UTF-32), two 16-bit values (UTF-16), or four 8-bit values (UTF-8). Although each of those forms uses the same total number of bits (32) to represent the glyph, it is not obvious how the actual numeric byte values are related. + +Transcoding +As a result of having many character encoding methods in use (and the need for backward compatibility with archived data), many computer programs have been developed to translate data between character encoding schemes, a process known as transcoding. Some of these are cited below. + +Cross-platform: + Web browsers – most modern web browsers feature automatic character encoding detection. On Firefox 3, for example, see the View/Character Encoding submenu. + iconv – a program and standardized API to convert encodings + luit – a program that converts encoding of input and output to programs running interactively + International Components for Unicode – A set of C and Java libraries to perform charset conversion. uconv can be used from ICU4C. + +Windows: + Encoding.Convert – .NET API + MultiByteToWideChar/WideCharToMultiByte – to convert from ANSI to Unicode & Unicode to ANSI + +See also + Percent-encoding + Alt code + Character encodings in HTML + :Category:Character encoding – articles related to character encoding in general + :Category:Character sets – articles detailing specific character encodings + Hexadecimal representations + Mojibake – character set mismap + Mojikyō – a system ("glyph set") that includes over 100,000 Chinese character drawings, modern and ancient, popular and obscure + Presentation layer + TRON, part of the TRON project, is an encoding system that does not use Han Unification; instead, it uses "control codes" to switch between 16-bit "planes" of characters. + Universal Character Set characters + Charset sniffing – used in some applications when character encoding metadata is not available + +Common character encodings + + ISO 646 + ASCII + EBCDIC + ISO 8859: + ISO 8859-1 Western Europe + ISO 8859-2 Western and Central Europe + ISO 8859-3 Western Europe and South European (Turkish, Maltese plus Esperanto) + ISO 8859-4 Western Europe and Baltic countries (Lithuania, Estonia, Latvia and Lapp) + ISO 8859-5 Cyrillic alphabet + ISO 8859-6 Arabic + ISO 8859-7 Greek + ISO 8859-8 Hebrew + ISO 8859-9 Western Europe with amended Turkish character set + ISO 8859-10 Western Europe with rationalised character set for Nordic languages, including complete Icelandic set + ISO 8859-11 Thai + ISO 8859-13 Baltic languages plus Polish + ISO 8859-14 Celtic languages (Irish Gaelic, Scottish, Welsh) + ISO 8859-15 Added the Euro sign and other rationalisations to ISO 8859-1 + ISO 8859-16 Central, Eastern and Southern European languages (Albanian, Bosnian, Croatian, Hungarian, Polish, Romanian, Serbian and Slovenian, but also French, German, Italian and Irish Gaelic) + CP437, CP720, CP737, CP850, CP852, CP855, CP857, CP858, CP860, CP861, CP862, CP863, CP865, CP866, CP869, CP872 + MS-Windows character sets: + Windows-1250 for Central European languages that use Latin script, (Polish, Czech, Slovak, Hungarian, Slovene, Serbian, Croatian, Bosnian, Romanian and Albanian) + Windows-1251 for Cyrillic alphabets + Windows-1252 for Western languages + Windows-1253 for Greek + Windows-1254 for Turkish + Windows-1255 for Hebrew + Windows-1256 for Arabic + Windows-1257 for Baltic languages + Windows-1258 for Vietnamese + Mac OS Roman + KOI8-R, KOI8-U, KOI7 + MIK + ISCII + TSCII + VISCII + JIS X 0208 is a widely deployed standard for Japanese character encoding that has several encoding forms. + Shift JIS (Microsoft Code page 932 is a dialect of Shift_JIS) + EUC-JP + ISO-2022-JP + JIS X 0213 is an extended version of JIS X 0208. + Shift_JIS-2004 + EUC-JIS-2004 + ISO-2022-JP-2004 + Chinese Guobiao + GB 2312 + GBK (Microsoft Code page 936) + GB 18030 + Taiwan Big5 (a more famous variant is Microsoft Code page 950) + Hong Kong HKSCS + Korean + KS X 1001 is a Korean double-byte character encoding standard + EUC-KR + ISO-2022-KR + Unicode (and subsets thereof, such as the 16-bit 'Basic Multilingual Plane') + UTF-8 + UTF-16 + UTF-32 + ANSEL or ISO/IEC 6937 + +References + +Further reading + +External links + +Character sets registered by Internet Assigned Numbers Authority (IANA) +Characters and encodings, by Jukka Korpela +Unicode Technical Report #17: Character Encoding Model +Decimal, Hexadecimal Character Codes in HTML Unicode – Encoding converter +The Absolute Minimum Every Software Developer Absolutely, Positively Must Know About Unicode and Character Sets (No Excuses!) by Joel Spolsky (Oct 10, 2003) + + +Encoding +In computing and telecommunication, a control character or non-printing character (NPC) is a code point in a character set that does not represent a written character or symbol. They are used as in-band signaling to cause effects other than the addition of a symbol to the text. All other characters are mainly graphic characters, also known as printing characters (or printable characters), except perhaps for "space" characters. In the ASCII standard there are 33 control characters, such as code 7, , which rings a terminal bell. + +History + +Procedural signs in Morse code are a form of control character. + +A form of control characters were introduced in the 1870 Baudot code: NUL and DEL. +The 1901 Murray code added the carriage return (CR) and line feed (LF), and other versions of the Baudot code included other control characters. + +The bell character (BEL), which rang a bell to alert operators, was also an early teletype control character. + +Some control characters have also been called "format effectors". + +In ASCII + +There were quite a few control characters defined (33 in ASCII, and the ECMA-48 standard adds 32 more). This was because early terminals had very primitive mechanical or electrical controls that made any kind of state-remembering API quite expensive to implement, thus a different code for each and every function looked like a requirement. It quickly became possible and inexpensive to interpret sequences of codes to perform a function, and device makers found a way to send hundreds of device instructions. Specifically, they used ASCII code 2710 (escape), followed by a series of characters called a "control sequence" or "escape sequence". The mechanism was invented by Bob Bemer, the father of ASCII. For example, the sequence of code 2710, followed by the printable characters "[2;10H", would cause a Digital Equipment Corporation VT100 terminal to move its cursor to the 10th cell of the 2nd line of the screen. Several standards exist for these sequences, notably ANSI X3.64. But the number of non-standard variations in use is large, especially among printers, where technology has advanced far faster than any standards body can possibly keep up with. + +All entries in the ASCII table below code 3210 (technically the C0 control code set) are of this kind, including CR and LF used to separate lines of text. The code 12710 (DEL) is also a control character. Extended ASCII sets defined by ISO 8859 added the codes 12810 through 15910 as control characters. This was primarily done so that if the high bit was stripped, it would not change a printing character to a C0 control code. This second set is called the C1 set. + +These 65 control codes were carried over to Unicode. Unicode added more characters that could be considered controls, but it makes a distinction between these "Formatting characters" (such as the zero-width non-joiner) and the 65 control characters. + +The Extended Binary Coded Decimal Interchange Code (EBCDIC) character set contains 65 control codes, including all of the ASCII control codes plus additional codes which are mostly used to control IBM peripherals. + +The control characters in ASCII still in common use include: + 0x00 (null, , , ), originally intended to be an ignored character, but now used by many programming languages including C to mark the end of a string. + 0x07 (bell, , , ), which may cause the device to emit a warning such as a bell or beep sound or the screen flashing. + 0x08 (backspace, , , ), may overprint the previous character. + 0x09 (horizontal tab, , , ), moves the printing position right to the next tab stop. + 0x0A (line feed, , , ), moves the print head down one line, or to the left edge and down. Used as the end of line marker in most UNIX systems and variants. + 0x0B (vertical tab, , , ), vertical tabulation. + 0x0C (form feed, , , ), to cause a printer to eject paper to the top of the next page, or a video terminal to clear the screen. + 0x0D (carriage return, , , ), moves the printing position to the start of the line, allowing overprinting. Used as the end of line marker in Classic Mac OS, OS-9, FLEX (and variants). A pair is used by CP/M-80 and its derivatives including DOS and Windows, and by Application Layer protocols such as FTP, SMTP, and HTTP. + 0x1A (Control-Z, , ). Acts as an end-of-file for the Windows text-mode file i/o. + 0x1B (escape, , (GCC only), ). Introduces an escape sequence. + +Control characters may be described as doing something when the user inputs them, such as code 3 (End-of-Text character, ETX, ) to interrupt the running process, or code 4 (End-of-Transmission character, EOT, ), used to end text input on Unix or to exit a Unix shell. These uses usually have little to do with their use when they are in text being output. + +In Unicode + +In Unicode, "Control-characters" are U+0000—U+001F (C0 controls), U+007F (delete), and U+0080—U+009F (C1 controls). Their General Category is "Cc". Formatting codes are distinct, in General Category "Cf". The Cc control characters have no Name in Unicode, but are given labels such as "" instead. + +Display +There are a number of techniques to display non-printing characters, which may be illustrated with the bell character in ASCII encoding: + Code point: decimal 7, hexadecimal 0x07 + An abbreviation, often three capital letters: BEL + A special character condensing the abbreviation: Unicode U+2407 (␇), "symbol for bell" + An ISO 2047 graphical representation: Unicode U+237E (⍾), "graphic for bell" + Caret notation in ASCII, where code point 00xxxxx is represented as a caret followed by the capital letter at code point 10xxxxx: ^G + An escape sequence, as in C/C++ character string codes: , , , etc. + +How control characters map to keyboards +ASCII-based keyboards have a key labelled "Control", "Ctrl", or (rarely) "Cntl" which is used much like a shift key, being pressed in combination with another letter or symbol key. In one implementation, the control key generates the code 64 places below the code for the (generally) uppercase letter it is pressed in combination with (i.e., subtract 0x40 from ASCII code value of the (generally) uppercase letter). The other implementation is to take the ASCII code produced by the key and bitwise AND it with 0x1F, forcing bits 5 to 7 to zero. For example, pressing "control" and the letter "g" (which is 0110 0111 in binary), produces the code 7 (BELL, 7 in base ten, or 0000 0111 in binary). The NULL character (code 0) is represented by Ctrl-@, "@" being the code immediately before "A" in the ASCII character set. For convenience, some terminals accept Ctrl-Space as an alias for Ctrl-@. In either case, this produces one of the 32 ASCII control codes between 0 and 31. Neither approach works to produce the DEL character because of its special location in the table and its value (code 12710), Ctrl-? is sometimes used for this character. + +When the control key is held down, letter keys produce the same control characters regardless of the state of the shift or caps lock keys. In other words, it does not matter whether the key would have produced an upper-case or a lower-case letter. The interpretation of the control key with the space, graphics character, and digit keys (ASCII codes 32 to 63) vary between systems. Some will produce the same character code as if the control key were not held down. Other systems translate these keys into control characters when the control key is held down. The interpretation of the control key with non-ASCII ("foreign") keys also varies between systems. + +Control characters are often rendered into a printable form known as caret notation by printing a caret (^) and then the ASCII character that has a value of the control character plus 64. Control characters generated using letter keys are thus displayed with the upper-case form of the letter. For example, ^G represents code 7, which is generated by pressing the G key when the control key is held down. + +Keyboards also typically have a few single keys which produce control character codes. For example, the key labelled "Backspace" typically produces code 8, "Tab" code 9, "Enter" or "Return" code 13 (though some keyboards might produce code 10 for "Enter"). + +Many keyboards include keys that do not correspond to any ASCII printable or control character, for example cursor control arrows and word processing functions. The associated keypresses are communicated to computer programs by one of four methods: appropriating otherwise unused control characters; using some encoding other than ASCII; using multi-character control sequences; or using an additional mechanism outside of generating characters. "Dumb" computer terminals typically use control sequences. Keyboards attached to stand-alone personal computers made in the 1980s typically use one (or both) of the first two methods. Modern computer keyboards generate scancodes that identify the specific physical keys that are pressed; computer software then determines how to handle the keys that are pressed, including any of the four methods described above. + +The design purpose + +The control characters were designed to fall into a few groups: printing and display control, data structuring, transmission control, and miscellaneous. + +Printing and display control +Printing control characters were first used to control the physical mechanism of printers, the earliest output device. An early example of this idea was the use of Figures (FIGS) and Letters (LTRS) in Baudot code to shift between two code pages. A later, but still early, example was the out-of-band ASA carriage control characters. Later, control characters were integrated into the stream of data to be printed. +The carriage return character (CR), when sent to such a device, causes it to put the character at the edge of the paper at which writing begins (it may, or may not, also move the printing position to the next line). +The line feed character (LF/NL) causes the device to put the printing position on the next line. It may (or may not), depending on the device and its configuration, also move the printing position to the start of the next line (which would be the leftmost position for left-to-right scripts, such as the alphabets used for Western languages, and the rightmost position for right-to-left scripts such as the Hebrew and Arabic alphabets). +The vertical and horizontal tab characters (VT and HT/TAB) cause the output device to move the printing position to the next tab stop in the direction of reading. +The form feed character (FF/NP) starts a new sheet of paper, and may or may not move to the start of the first line. +The backspace character (BS) moves the printing position one character space backwards. On printers, including hard-copy terminals, this is most often used so the printer can overprint characters to make other, not normally available, characters. On video terminals and other electronic output devices, there are often software (or hardware) configuration choices that allow a destructive backspace (e.g., a BS, SP, BS sequence), which erases, or a non-destructive one, which does not. +The shift in and shift out characters (SI and SO) selected alternate character sets, fonts, underlining, or other printing modes. Escape sequences were often used to do the same thing. + +With the advent of computer terminals that did not physically print on paper and so offered more flexibility regarding screen placement, erasure, and so forth, printing control codes were adapted. Form feeds, for example, usually cleared the screen, there being no new paper page to move to. More complex escape sequences were developed to take advantage of the flexibility of the new terminals, and indeed of newer printers. The concept of a control character had always been somewhat limiting, and was extremely so when used with new, much more flexible, hardware. Control sequences (sometimes implemented as escape sequences) could match the new flexibility and power and became the standard method. However, there were, and remain, a large variety of standard sequences to choose from. + +Data structuring +The separators (File, Group, Record, and Unit: FS, GS, RS and US) were made to structure data, usually on a tape, in order to simulate punched cards. +End of medium (EM) warns that the tape (or other recording medium) is ending. +While many systems use CR/LF and TAB for structuring data, it is possible to encounter the separator control characters in data that needs to be structured. The separator control characters are not overloaded; there is no general use of them except to separate data into structured groupings. Their numeric values are contiguous with the space character, which can be considered a member of the group, as a word separator. + +For example, the RS separator is used by (JSON Text Sequences) to encode a sequence of JSON elements. Each sequence item starts with a RS character and ends with a line feed. This allows to serialize open-ended JSON sequences. It is one of the JSON streaming protocols. + +Transmission control +The transmission control characters were intended to structure a data stream, and to manage re-transmission or graceful failure, as needed, in the face of transmission errors. + +The start of heading (SOH) character was to mark a non-data section of a data stream—the part of a stream containing addresses and other housekeeping data. The start of text character (STX) marked the end of the header, and the start of the textual part of a stream. The end of text character (ETX) marked the end of the data of a message. A widely used convention is to make the two characters preceding ETX a checksum or CRC for error-detection purposes. The end of transmission block character (ETB) was used to indicate the end of a block of data, where data was divided into such blocks for transmission purposes. + +The escape character (ESC) was intended to "quote" the next character, if it was another control character it would print it instead of performing the control function. It is almost never used for this purpose today. Various printable characters are used as visible "escape characters", depending on context. + +The substitute character (SUB) was intended to request a translation of the next character from a printable character to another value, usually by setting bit 5 to zero. This is handy because some media (such as sheets of paper produced by typewriters) can transmit only printable characters. However, on MS-DOS systems with files opened in text mode, "end of text" or "end of file" is marked by this Ctrl-Z character, instead of the Ctrl-C or Ctrl-D, which are common on other operating systems. + +The cancel character (CAN) signaled that the previous element should be discarded. The negative acknowledge character (NAK) is a definite flag for, usually, noting that reception was a problem, and, often, that the current element should be sent again. The acknowledge character (ACK) is normally used as a flag to indicate no problem detected with current element. + +When a transmission medium is half duplex (that is, it can transmit in only one direction at a time), there is usually a master station that can transmit at any time, and one or more slave stations that transmit when they have permission. The enquire character (ENQ) is generally used by a master station to ask a slave station to send its next message. A slave station indicates that it has completed its transmission by sending the end of transmission character (EOT). + +The device control codes (DC1 to DC4) were originally generic, to be implemented as necessary by each device. However, a universal need in data transmission is to request the sender to stop transmitting when a receiver is temporarily unable to accept any more data. Digital Equipment Corporation invented a convention which used 19 (the device control 3 character (DC3), also known as control-S, or XOFF) to "S"top transmission, and 17 (the device control 1 character (DC1), a.k.a. control-Q, or XON) to start transmission. It has become so widely used that most don't realize it is not part of official ASCII. This technique, however implemented, avoids additional wires in the data cable devoted only to transmission management, which saves money. A sensible protocol for the use of such transmission flow control signals must be used, to avoid potential deadlock conditions, however. + +The data link escape character (DLE) was intended to be a signal to the other end of a data link that the following character is a control character such as STX or ETX. For example a packet may be structured in the following way (DLE) (DLE) . + +Miscellaneous codes +Code 7 (BEL) is intended to cause an audible signal in the receiving terminal. + +Many of the ASCII control characters were designed for devices of the time that are not often seen today. For example, code 22, "synchronous idle" (SYN), was originally sent by synchronous modems (which have to send data constantly) when there was no actual data to send. (Modern systems typically use a start bit to announce the beginning of a transmitted word— this is a feature of asynchronous communication. Synchronous communication links were more often seen with mainframes, where they were typically run over corporate leased lines to connect a mainframe to another mainframe or perhaps a minicomputer.) + +Code 0 (ASCII code name NUL) is a special case. In paper tape, it is the case when there are no holes. It is convenient to treat this as a fill character with no meaning otherwise. Since the position of a NUL character has no holes punched, it can be replaced with any other character at a later time, so it was typically used to reserve space, either for correcting errors or for inserting information that would be available at a later time or in another place. In computing it is often used for padding in fixed length records and more commonly, to mark the end of a string. + +Code 127 (DEL, a.k.a. "rubout") is likewise a special case. Its 7-bit code is all-bits-on in binary, which essentially erased a character cell on a paper tape when overpunched. Paper tape was a common storage medium when ASCII was developed, with a computing history dating back to WWII code breaking equipment at Biuro Szyfrów. Paper tape became obsolete in the 1970s, so this clever aspect of ASCII rarely saw any use after that. Some systems (such as the original Apples) converted it to a backspace. But because its code is in the range occupied by other printable characters, and because it had no official assigned glyph, many computer equipment vendors used it as an additional printable character (often an all-black "box" character useful for erasing text by overprinting with ink). + +Non-erasable programmable ROMs are typically implemented as arrays of fusible elements, each representing a bit, which can only be switched one way, usually from one to zero. In such PROMs, the DEL and NUL characters can be used in the same way that they were used on punched tape: one to reserve meaningless fill bytes that can be written later, and the other to convert written bytes to meaningless fill bytes. For PROMs that switch one to zero, the roles of NUL and DEL are reversed; also, DEL will only work with 7-bit characters, which are rarely used today; for 8-bit content, the character code 255, commonly defined as a nonbreaking space character, can be used instead of DEL. + +Many file systems do not allow control characters in filenames, as they may have reserved functions. + +See also + , HJKL as arrow keys, used on ADM-3A terminal + C0 and C1 control codes + Escape sequence + In-band signaling + Whitespace character + +Notes and references + +External links + + ISO IR 1 C0 Set of ISO 646 (PDF) +Carbon () is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—its atom making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon makes up about 0.025 percent of Earth's crust. Three isotopes occur naturally, C and C being stable, while C is a radionuclide, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity. + +Carbon is the 15th most abundant element in the Earth's crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Carbon's abundance, its unique diversity of organic compounds, and its unusual ability to form polymers at the temperatures commonly encountered on Earth, enables this element to serve as a common element of all known life. It is the second most abundant element in the human body by mass (about 18.5%) after oxygen. + +The atoms of carbon can bond together in diverse ways, resulting in various allotropes of carbon. Well-known allotropes include graphite, diamond, amorphous carbon, and fullerenes. The physical properties of carbon vary widely with the allotropic form. For example, graphite is opaque and black, while diamond is highly transparent. Graphite is soft enough to form a streak on paper (hence its name, from the Greek verb "γράφειν" which means "to write"), while diamond is the hardest naturally occurring material known. Graphite is a good electrical conductor while diamond has a low electrical conductivity. Under normal conditions, diamond, carbon nanotubes, and graphene have the highest thermal conductivities of all known materials. All carbon allotropes are solids under normal conditions, with graphite being the most thermodynamically stable form at standard temperature and pressure. They are chemically resistant and require high temperature to react even with oxygen. + +The most common oxidation state of carbon in inorganic compounds is +4, while +2 is found in carbon monoxide and transition metal carbonyl complexes. The largest sources of inorganic carbon are limestones, dolomites and carbon dioxide, but significant quantities occur in organic deposits of coal, peat, oil, and methane clathrates. Carbon forms a vast number of compounds, with about two hundred million having been described and indexed; and yet that number is but a fraction of the number of theoretically possible compounds under standard conditions. + +Characteristics + +The allotropes of carbon include graphite, one of the softest known substances, and diamond, the hardest naturally occurring substance. It bonds readily with other small atoms, including other carbon atoms, and is capable of forming multiple stable covalent bonds with suitable multivalent atoms. Carbon is a component element in the large majority of all chemical compounds, with about two hundred million examples having been described in the published chemical literature. Carbon also has the highest sublimation point of all elements. At atmospheric pressure it has no melting point, as its triple point is at and , so it sublimes at about . Graphite is much more reactive than diamond at standard conditions, despite being more thermodynamically stable, as its delocalised pi system is much more vulnerable to attack. For example, graphite can be oxidised by hot concentrated nitric acid at standard conditions to mellitic acid, C6(CO2H)6, which preserves the hexagonal units of graphite while breaking up the larger structure. + +Carbon sublimes in a carbon arc, which has a temperature of about 5800 K (5,530 °C or 9,980 °F). Thus, irrespective of its allotropic form, carbon remains solid at higher temperatures than the highest-melting-point metals such as tungsten or rhenium. Although thermodynamically prone to oxidation, carbon resists oxidation more effectively than elements such as iron and copper, which are weaker reducing agents at room temperature. + +Carbon is the sixth element, with a ground-state electron configuration of 1s22s22p2, of which the four outer electrons are valence electrons. Its first four ionisation energies, 1086.5, 2352.6, 4620.5 and 6222.7 kJ/mol, are much higher than those of the heavier group-14 elements. The electronegativity of carbon is 2.5, significantly higher than the heavier group-14 elements (1.8–1.9), but close to most of the nearby nonmetals, as well as some of the second- and third-row transition metals. Carbon's covalent radii are normally taken as 77.2 pm (C−C), 66.7 pm (C=C) and 60.3 pm (C≡C), although these may vary depending on coordination number and what the carbon is bonded to. In general, covalent radius decreases with lower coordination number and higher bond order. + +Carbon-based compounds form the basis of all known life on Earth, and the carbon-nitrogen-oxygen cycle provides a small portion of the energy produced by the Sun, and most of the energy in larger stars (e.g. Sirius). Although it forms an extraordinary variety of compounds, most forms of carbon are comparatively unreactive under normal conditions. At standard temperature and pressure, it resists all but the strongest oxidizers. It does not react with sulfuric acid, hydrochloric acid, chlorine or any alkalis. At elevated temperatures, carbon reacts with oxygen to form carbon oxides and will rob oxygen from metal oxides to leave the elemental metal. This exothermic reaction is used in the iron and steel industry to smelt iron and to control the carbon content of steel: + + 4 C + 2 → 3 Fe + 4 . + +Carbon reacts with sulfur to form carbon disulfide, and it reacts with steam in the coal-gas reaction used in coal gasification: +C + HO → CO + H. + +Carbon combines with some metals at high temperatures to form metallic carbides, such as the iron carbide cementite in steel and tungsten carbide, widely used as an abrasive and for making hard tips for cutting tools. + +The system of carbon allotropes spans a range of extremes: + +Allotropes + +Atomic carbon is a very short-lived species and, therefore, carbon is stabilized in various multi-atomic structures with diverse molecular configurations called allotropes. The three relatively well-known allotropes of carbon are amorphous carbon, graphite, and diamond. Once considered exotic, fullerenes are nowadays commonly synthesized and used in research; they include buckyballs, carbon nanotubes, carbon nanobuds and nanofibers. Several other exotic allotropes have also been discovered, such as lonsdaleite, glassy carbon, carbon nanofoam and linear acetylenic carbon (carbyne). + +Graphene is a two-dimensional sheet of carbon with the atoms arranged in a hexagonal lattice. As of 2009, graphene appears to be the strongest material ever tested. The process of separating it from graphite will require some further technological development before it is economical for industrial processes. If successful, graphene could be used in the construction of a space elevator. It could also be used to safely store hydrogen for use in a hydrogen based engine in cars. + + The amorphous form is an assortment of carbon atoms in a non-crystalline, irregular, glassy state, not held in a crystalline macrostructure. It is present as a powder, and is the main constituent of substances such as charcoal, lampblack (soot), and activated carbon. At normal pressures, carbon takes the form of graphite, in which each atom is bonded trigonally to three others in a plane composed of fused hexagonal rings, just like those in aromatic hydrocarbons. The resulting network is 2-dimensional, and the resulting flat sheets are stacked and loosely bonded through weak van der Waals forces. This gives graphite its softness and its cleaving properties (the sheets slip easily past one another). Because of the delocalization of one of the outer electrons of each atom to form a π-cloud, graphite conducts electricity, but only in the plane of each covalently bonded sheet. This results in a lower bulk electrical conductivity for carbon than for most metals. The delocalization also accounts for the energetic stability of graphite over diamond at room temperature. + +At very high pressures, carbon forms the more compact allotrope, diamond, having nearly twice the density of graphite. Here, each atom is bonded tetrahedrally to four others, forming a 3-dimensional network of puckered six-membered rings of atoms. Diamond has the same cubic structure as silicon and germanium, and because of the strength of the carbon-carbon bonds, it is the hardest naturally occurring substance measured by resistance to scratching. Contrary to the popular belief that "diamonds are forever", they are thermodynamically unstable (ΔfG°(diamond, 298 K) = 2.9 kJ/mol) under normal conditions (298 K, 105 Pa) and should theoretically transform into graphite. But due to a high activation energy barrier, the transition into graphite is so slow at normal temperature that it is unnoticeable. However, at very high temperatures diamond will turn into graphite, and diamonds can burn up in a house fire. The bottom left corner of the phase diagram for carbon has not been scrutinized experimentally. Although a computational study employing density functional theory methods reached the conclusion that as and , diamond becomes more stable than graphite by approximately 1.1 kJ/mol, more recent and definitive experimental and computational studies show that graphite is more stable than diamond for , without applied pressure, by 2.7 kJ/mol at T = 0 K and 3.2 kJ/mol at T = 298.15 K. Under some conditions, carbon crystallizes as lonsdaleite, a hexagonal crystal lattice with all atoms covalently bonded and properties similar to those of diamond. + +Fullerenes are a synthetic crystalline formation with a graphite-like structure, but in place of flat hexagonal cells only, some of the cells of which fullerenes are formed may be pentagons, nonplanar hexagons, or even heptagons of carbon atoms. The sheets are thus warped into spheres, ellipses, or cylinders. The properties of fullerenes (split into buckyballs, buckytubes, and nanobuds) have not yet been fully analyzed and represent an intense area of research in nanomaterials. The names fullerene and buckyball are given after Richard Buckminster Fuller, popularizer of geodesic domes, which resemble the structure of fullerenes. The buckyballs are fairly large molecules formed completely of carbon bonded trigonally, forming spheroids (the best-known and simplest is the soccerball-shaped C buckminsterfullerene). Carbon nanotubes (buckytubes) are structurally similar to buckyballs, except that each atom is bonded trigonally in a curved sheet that forms a hollow cylinder. Nanobuds were first reported in 2007 and are hybrid buckytube/buckyball materials (buckyballs are covalently bonded to the outer wall of a nanotube) that combine the properties of both in a single structure. + +Of the other discovered allotropes, carbon nanofoam is a ferromagnetic allotrope discovered in 1997. It consists of a low-density cluster-assembly of carbon atoms strung together in a loose three-dimensional web, in which the atoms are bonded trigonally in six- and seven-membered rings. It is among the lightest known solids, with a density of about 2 kg/m. Similarly, glassy carbon contains a high proportion of closed porosity, but contrary to normal graphite, the graphitic layers are not stacked like pages in a book, but have a more random arrangement. Linear acetylenic carbon has the chemical structure −(C≡C)− . Carbon in this modification is linear with sp orbital hybridization, and is a polymer with alternating single and triple bonds. This carbyne is of considerable interest to nanotechnology as its Young's modulus is 40 times that of the hardest known material – diamond. + +In 2015, a team at the North Carolina State University announced the development of another allotrope they have dubbed Q-carbon, created by a high-energy low-duration laser pulse on amorphous carbon dust. Q-carbon is reported to exhibit ferromagnetism, fluorescence, and a hardness superior to diamonds. + +In the vapor phase, some of the carbon is in the form of highly reactive diatomic carbon dicarbon (). When excited, this gas glows green. + +Occurrence + +Carbon is the fourth most abundant chemical element in the observable universe by mass after hydrogen, helium, and oxygen. Carbon is abundant in the Sun, stars, comets, and in the atmospheres of most planets. Some meteorites contain microscopic diamonds that were formed when the Solar System was still a protoplanetary disk. Microscopic diamonds may also be formed by the intense pressure and high temperature at the sites of meteorite impacts. + +In 2014 NASA announced a greatly upgraded database for tracking polycyclic aromatic hydrocarbons (PAHs) in the universe. More than 20% of the carbon in the universe may be associated with PAHs, complex compounds of carbon and hydrogen without oxygen. These compounds figure in the PAH world hypothesis where they are hypothesized to have a role in abiogenesis and formation of life. PAHs seem to have been formed "a couple of billion years" after the Big Bang, are widespread throughout the universe, and are associated with new stars and exoplanets. + +It has been estimated that the solid earth as a whole contains 730 ppm of carbon, with 2000 ppm in the core and 120 ppm in the combined mantle and crust. Since the mass of the earth is , this would imply 4360 million gigatonnes of carbon. This is much more than the amount of carbon in the oceans or atmosphere (below).